A Forbidden Crush Pt. 02

Summer was under way now that it was officially July, and it had been almost a week since Sean had visited his sister in her bedroom at night, masturbating over her sleeping form. Except, in the end, he had discovered that she wasn't sleeping. She had, in fact, tugged her panties down for him on purpose and exposed her pussy, letting him spray his load all over her stomach and groin. He didn't realize she was awake until he went to leave and she had wished him a good night.

Since then, he had expected things to be awkward. He woke up the next morning, terrified to face her. When he had no other choice, he discovered that she was the same ole' big sis that she had always been. She still called him dork, still liked to poke fun at him. And she never once brought up his nocturnal visit. It was like it had never happened.

One particularly hot, sunny morning, Sean and his big sister Ally were lounging in the backyard in the cheap, vinyl-strapped patio chairs that their parents owned. They leaned upon the glass patio table, both of them sweating and listless from the heat.

Sean had put his head down on the table as they watched their father work, feeling drained. He was wearing a pair of black shorts and a baggy white t-shirt, covering up his thin physique, and his brown hair was messy as usual, made all the worse by sweat. He was 18, but his thin frame and smooth face made him look younger.

Their father was a tall, thin man with a beard, and he was currently in the process of checking the pH levels in their above-ground pool. Now that the weather was hot, he had finally gotten around to getting it set up, and since both of his kids were home this summer it seemed like a good idea. It was true that he probably should have gotten it ready at least a month ago, a fact that his kids were not letting him forget.

"That's right, Daddy, make sure that pool is perfect just for us!" Ally calls to him teasingly. He looks up at her and raises and eyebrow, saying all he needs to in a single, fatherly look.

"Oh, leave him alone, sis..." Sean mumbles sleepily. "At least he's finally doing it."

"Yeah, thanks to Mom," she says. "He never would've done it just for us. Man's getting old and lazy now!" She looks over at her father again. "You hear that, old man! You're just lazy!"

This time their Dad stops. He's a good-natured man, and he looks back at his 20 year old daughter with a smirk. "You could get off your ass and come help me," he grunts. "I'm only setting this up cause you're home now, too."

"Gee, thanks, Dad," Sean says sarcastically, still not lifting his head. "I feel so loved."

Ally giggles. To Sean, the sound of his sister's laughter is one of the most beautiful sounds on Earth, and he feels his heart skip a beat just from hearing it.

Today she had her wavy brown hair pulled back in a high ponytail, accentuating the curve of her neck and her flawless skin, marred only by a smattering of freckles across the bridge of her nose which only made her look adorable. She is wearing white shorts and a light blue tank top that depicts a beach scene on the front, and Sean is secretly pleased to see that it is a little too small for her. As she sprawls her arms out of the table, he is given a beautiful side view of Ally's torso, the tank top barely making it over her shoulder to the other side. Besides the sensuous curve of her abdomen, running in a gradual slope up her back, he is offered a generous view of her side boob and the soft flesh of her C-cup breasts. Beneath this, the faint depressions of her ribcage are just barely visible. Sometimes when she moves he can make out the tantalizing slope that leads down to her flat, well-toned stomach as well.

Ultimately, he is glad that his lap is hidden under the table.

"I don't suppose the pool is going to be ready today, is it? Cause I'm really hot, Daddy. If it's going to take much longer I think I need to go inside with the air conditioning." Ally whines to her father, her face the distressed princess-face she always gives him when she wants something.

"It pretty much is," their Dad answers, and Sean picks his head up. "The water seems to test ok, so... yeah. I think the pool is officially open." He grins at them.

"Finally..." Sean mutters, just as Ally lets out an excited squeal. They both jump up from the table, eager to change into their swimsuits and cool off in the pool.

"Let your mother know when you go in," their Dad says, picking up his test kit along with the various hoses and other pool equipment he left scattered around. Ally assures him that they will.

As they rush past their mother, who is cutting a watermelon in the kitchen, she asks them what's up and they tell her about the pool on their way to the stairs. Not wasting any more time on the subject, they both rush up, suddenly reverting to excited little children. Ally jumps the steps two at a time, giggling as Sean chases her, both of them stomping up the steps and earning an angry 'hey!' from their mother.

Sean ends up chasing his sister down the hall to her bedroom, both of them giggling the whole way. She slams the door in his face when she gets there, and he hears her lock it. "Missed me, dork!" she shouts from the other side, and Sean smiles.

The game over, he heads into his own bedroom and shuts the door behind him. He also locks his door, then he tiptoes across the room towards his closet. This was the perfect opportunity for his peephole.

Some years back, Sean had dug this peephole out of a weak spot in the drywall using a pair of scissors, and had expertly disguised it to look like just a dent in the workmanship. It went straight through into Ally's bedroom, offering him an excellent view of her bed, and Sean had masturbated in front of it more times than he could count. Now, knowing that she was about to change into her swimsuit, he poked his head into his closet and leaned down in front of the small hole.

At first he could see nothing, just her bed as usual, but there was faint sounds of movement from within and he knew she was just out of view. He waited, holding his breath, trying not to pant. He had a bad habit of breathing heavily whenever looked at her naked, and this made it difficult to keep quiet. As he waited for what seemed like an eternity, there was a sudden banging sound from her room that he could only assume was her dresser drawer, and then all of a sudden she was in view.

His heart sank when he saw her, realizing that she had already changed into her swimsuit while she out of view. He wasn't going to be getting a look at his sister right now, it seemed. But, he tried to reassure himself, she would change again after they went into the pool, too.

On the plus side Ally seemed to be wearing a small, white bikini with stylish stripes on the edges, and it did present him with an incredible view of most of his beautiful sister's body. Her skin was pale and perfect, dotted along her shoulders with more tiny freckles, her legs and belly smooth and alabaster. The bottom half of her bikini was small, barely concealing anything, and was tied at the hips, revealing the soft indentation of her back, leading down to the sumptuous swell of her perfectly round buttocks.

She walked past the peephole before he could see any more, the muscles in her thighs flexing and her behind shaking enticingly at him as she moved towards her bedroom door. He didn't get to see her breasts in the bikini but it didn't matter, he was about to see them soon.

Ducking back out of his closet, Sean quickly strips off his shirt and pants, standing in only his boxers. He then begins rifling through his dresser drawers, trying find where he put his swimsuit. Knowing that he should already be dressed, he begins to get frantic when he can't find it. Suddenly, there is knock on his bedroom door, making him jump.

He rushes over and unlocks it, opening it just a little to peek out. He is still dressed in nothing but his boxer shorts, but lately he doesn't seem to feel the need to be as modest around his sister. Ally is indeed standing there, and not just standing there... she is topless.

Sean quickly throws open the door, ushering her inside, suddenly feeling guilty without being sure why. She steps in, carrying the strings of her bikini top, and he closes and locks the door behind them.

Ally giggles. "Why'd you lock it, bro?" she asks sweetly.

Sean shrugs. "I dunno. Just seemed like I should. What do you need, sis? Why are you... not wearing a top?" he asks, his voice shakier than he would have liked.

She saunters over to him, moving close, her beautiful, perky breasts pointing at him. Her nipples are large and standing erect, and he could almost smell her arousal. Never had he been this close to his sister's bare tits, not while she was awake, and he felt his breath catch in his throat. His cock immediately responds to the proximity, and he feels a tingling in his groin.

Ally gives him a playful smile, her dimples winking as she hands him the bikini strings. "Could you tie this for me?" she asks, twirling a lock of hair around her finger. "I can never reach back there, anymore."

He takes the bikini top in trembling hands, his eyes darting back to her breasts every few seconds like he couldn't help it. Ally could see his discomfort but didn't acknowledge it, instead turning around and giving him a generous view of her perfect, heart-shaped backside, the cheeks showing prominently around the sides of the bottom half.

Sean takes a deep breath, then wraps the bikini top around his sister's chest from behind. As he does so his hands briefly run along the soft flesh on the side of her breasts, caressing them and making her jump. He hears her gasp sharply, but she again says nothing, instead letting him bring the strings together at the warm, smooth skin of her back. His hands are clumsy as he tries to tie the knot, his mind racing with thoughts he knows he shouldn't be having, his cheeks flushed.

When he finally tightens it, Ally chuckles and wiggles her shoulders. "Thanks, dork," she says, her voice dripping with satisfaction as she turns to face him. The way she looks at him makes Sean's pulse quicken, a knowing look that sends a jolt of electricity through him.

She steps back from him and turns towards his mirror, presenting him with her perfect ass once more. As she adjusts the strings of the bikini, making sure they lay perfectly along her shoulders and spine, her breasts jiggle with the movement, and Sean can't help but stare. He is drawn to the way the fabric clings to her natural curves, the way her nipples poke softly against it, and the way her body moves and flexes in an unconsciously sensual manner.

"There, perfect," she finally says, satisfied. "Thanks, kid. You're a lifesaver." She turns and looks at him again, a grin spread across her face. "Let's go hit the pool!"

Sean nods, his heart thudding in his chest as he gazes at his sister. As she turns towards the door her breasts sway slightly, and he can't help but let his eyes linger on her body, admiring the way her bikini bottom hugs the curve of her hips, the way her stomach dips in at the waist. Her ass cheeks are toned and perfectly round, the soft curves underneath sloping down gently into her muscular thighs.

She unlocks his bedroom door, offering him one last mischievous smile, then opens it and steps outside. Sean stands watching her, his penis very hard inside his boxer shorts, creating a very noticeable tent in front of him. A flush washes over his face as he suddenly realizes that his boxers are all he is wearing still, and had been the entire time his topless sister was in the room with him. But to make matters worse, he was sporting an extremely obvious erection and there was absolutely no way that Ally wouldn't have been able to tell.

He waits until she has left, then strips off his boxers and begins hunting for his swimsuit in his dresser once more. He is now completely naked in his bedroom, his cock standing stiff and at attention in front of him. Finally, he finds what he is looking for and pulls them out with a flourish.

His door suddenly opens once more, and he jumps. Ally pokes her head in again, and giggling, she asks, "You coming yet, bro?" The question is made all the more awkward by the fact that he is standing there naked with a very large boner.

He quickly puts his swimsuit in front of his stiff member, trying to hide it. "Yeah, I'm coming! Give me two seconds!"

Ally laughs. "Well hurry up, pervert." She starts to close the door, then quickly pokes her head back in. "Oh, and nice cock, by the way," and then she is gone again.

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The sun was hot as they climbed up the ladder on the side of the pool, the smell of fresh chlorine thick in the air. Sean politely let his sister go first, preferring to take the opportunity to stand underneath her as he watched her toned buttocks flex on the ladder above him. Only when she was all the way up did Sean begin to climb himself.

Their parents came out into the yard shortly after them, and their Mom waved to them. In his hands their father carried a plate filled with uncooked chicken, obviously meant for the grill, and he set it down on the patio table. Their mother took a seat in one of the outdoor patio chairs, sipping on a glass of wine. She was wearing a simple sundress, and had accessorized this with a very large pair of sunglasses that were far too big on her face.

"Wow, Mom's looking stylish," Ally said quietly, loud enough only for Sean to hear, and he laughed. She had already lowered herself into the water without hesitation and was reclining on the side.

"That's our genes. You're going to turn out like her someday," he joked back, and Ally splashed water at him.

"Ack!" he shouted and lifted his hands up in defense. He was much slower to get into the water, sitting instead on the side with his feet dangling. Now he was wet anyway.

"I'm not going to turn into Mom," she says matter-of-factly. "I might look like her someday but I'm not going to make all the same mistakes she did. I'm going to do it right."

Sean chuckles. "I'm sure. I'm sure you'll never make a single mistake your whole life, because you're just sooo..." He doesn't get any further as Ally splashes him again. "Hey, stop!" he laughs.

"Guys, keep the water in the pool, please!" their Mom shouts at them.

"Yeah, dork, in the pool she said." Ally teases, "Why aren't you in here yet, anyway? You're already wet now."

"I'll get in when I'm ready," Sean says quietly. He is slow to adjust to the water, yes, but he is also taking the opportunity to simply watch his sister.

With a giggle, Ally launches herself backwards and does a backstroke across the pool, kicking her legs gently. Sean's eyes never leave her, admiring her toned physique, her curves perfectly outlined by the white bikini she wears. She glides through the water effortlessly, the water cascading off her in tiny rivulets, the sun glistening on her skin and painting a pattern across her body. His eyes trace the curve of her hips as they roll with the rhythm of her swimming, her toned abs contracting with each kick. Her breasts bob gently with the movement, the water lapping at them as she moves to the other side of the pool.

When she makes it across, she grabs a hold of the edge, and with a powerful kick of her strong legs against the side wall she pushes off and rockets back towards him again. The water cascades over her body as she slices through it, her eyes closed as she allows it to envelop her in a liquid cocoon.

Sean's eyes remain locked on his sister's toned wet body, his crotch responding inside his swimsuit. He didn't want to admit it, but another reason he wasn't standing up now and joining the pool with his sister was because his penis was currently rock hard and pressing painfully against the inside of his suit.

"Bro, c'mon," Ally says as she swims closer again. "Enough being a puss, already. Get in the pool and play with me."

Sean smirks. "Play with you?" he asks. "What are we going to play, Marco Polo?"

Ally giggles. "I don't know, maybe. Come in and find out." She holds position for a moment before she dives backwards, disappearing beneath the water once more. Sean watches as her dark form slips just below the surface. She shoots through the water for a couple of feet before reappearing once more in the middle of the pool. As she resurfaces, her eyes closed and the water cascading through her hair, her breasts jiggle slightly and Sean notices that one side of her top has come slightly askew. He shifts his position, suddenly uncomfortable, watching the water trickle enticingly between the perfect curves of his sister's breasts and down the line of her stomach. Ally opens her mouth as she catches her breath, and as the water drips provocatively she lets out a small, high-pitched whimper.

Watching her, the water clinging to her skin in sensual droplets, Sean finds it difficult not to stare. The way she moves is so sensual he finds it difficult to believe that she wasn't trying to tease him on purpose. Perhaps she was... and this thought aroused him even more.

Ever since she had let him masturbate on her bare pussy, even going so far as to pull her own panties down so that his semen could splatter on her shaved labia, Sean had been confused about what was appropriate with his big sister. It was like she wanted him to lust after her... but at the same time, they had at no point brought up that awkward evening again. This made him wonder if it was ok to feel what he still felt for her, which was of course unbridled passion. She acted like nothing had ever happened, so was she hoping he would just forget about it, too? He wasn't sure, so to play it safe, he had remained quiet as well.

"Well? What about you, little man?" Ally asks. "Are you going to jump in the pool too, or are you just going to stare at my tits all day?" she asks, a wide grin spreading across her face as she rubs the water from her eyes.

Sean's eyes widen, and then he quickly looks down at his hands. He suddenly felt like he had been caught in the act.

"I..." he stammered. "I.... was just...." he managed, and Ally laughed.

"Yeah, ok bro. I get it." she giggles. "Why don't you get your weird, perverted ass in here instead, huh?" She splashed water at him again, this time gently and playfully.

His face went beet red, and Sean quickly glances up at their parents. Dad is scrubbing the grill in preparation of the barbeque, and Mom is scrolling through her phone while sipping wine. Neither one of them is paying any attention to the children playing in the pool.

"Ok, ok..." he mumbles, and gently he lets his thin body slip into the water. His breath hitches as the cold water envelops first his groin and then his heart, and he shivers for a moment as he adjusts to the new temperature on his sensitive skin.

"Hey, there ya go!" Ally laughs playfully, watching him shiver in the water at the pool's edge.

Sean's teeth chatter loudly as he bobs in one place, one hand holding him against the side of the pool. His normally messy hair hangs wetly in his face from all the times Ally splashed him, sticking up in maniacal spikes at the back. He looks at his sister, suddenly not feeling as aroused as before, and spits water out of his mouth.

Ally laughs and swims gently over to him. "Poor little bro, you look like a sad, little puppy that fell in!" she says teasingly.

He smiles, then reaches up and tries to push the hair out of his eyes. When he does he has apparently forgotten that his hands were just underwater and he succeeds in splashing more water on himself. He coughs and shakes his head, spitting.

Ally laughs again. She leans away from him as he rubs his face, eventually managing to clear his eyes enough to see. "You're having a rough time, little bro!" She says through her laughter.

Sean looks at her, his blood sister, a vision of absolute beauty floating in the water in front of him. Her hair is loose now and dripping wet, cascading over her shoulders and down her back. Her smile is radiant in the afternoon sun, her freckled skin dappled with water droplets. As he watches, a trickle of water runs down the front of her chest, following the delicate lines of her collarbone before making the dive between her breasts. Her bikini top clings to her skin, her nipples clearly visible through the wet fabric.

She seems to sense his gaze, because her smile of good-natured mirth suddenly softens. It doesn't fade away completely, however, instead becoming a look of compassionate understanding. She moves closer to him, surprising him, but he doesn't pull away.

"Is there anything I can do to help you out?" she asks when she gets close, her voice suddenly dropping, becoming almost a whisper.

Sean doesn't answer. He knows what he wants to say, but he can't say it without risking sounding like a total pervert if he is mistaken. But she knows, right? He knows that she knows about his obsession with her. She was awake that night. He knows it. His mind reels with the implications of what his sister has just asked him.

Ally doesn't seem to mind. She moves even closer to him, her beautifully toned body now directly in front of her little brother's pale, thin body. He can smell the chlorine on her skin now, mingled faintly with the remnants of perfume that seems to always linger on her, no matter where she goes. It's a smell he's come to love.

Her hand suddenly reaches out and grips the edge of his swimsuit under the water and tugs, and he lets himself be drawn even closer to her body. They are almost touching now, and Sean's cock swells as he feels the back of her hand brush against his lower stomach. He is naturally not wearing any underwear beneath his swimsuit, and this places her fingers dangerously close to his growing erection.

"... what...?" he starts, but she shushes him quickly. She looks over at their parents, who are still busy with their own affairs, then back at her brother.

Sean's heart is pounding fiercely in his chest as his big sister, the girl he's been in love with for most of their lives, suddenly slides her hand further inside of his swimsuit and grips his hard penis. His breath hitches and his eyes bulge as he realizes what's happening.

"Let me help you out," she says quietly, and smiles suggestively. Her hand begins sliding up and down on his shaft under the water. "You've been having such a rough time lately. I feel bad for my little bro."

Sean's heart is pounding as he feels his body respond. His cock becomes engorged under Ally's eager caress, and he lets out a small yelp.

"Shhh, you have to be quiet though. We don't want Mom and Dad to hear us," she whispers, and now her face is close to his. Her breasts are inches from his own body, her nipples poking sharply against the fabric, obviously very aroused herself. "Do you want to touch them?" she asks him quietly.

Sean nods but says nothing. He is focused on the feeling of her fingers wrapped around his cock, giving him a secret handjob in front of their parents. Each stroke sends a shiver of pleasure through his body, the water acting like a natural lubricant and increasing the friction of her grip. The sensation is lessened for him somewhat, the water's resistance making her task more challenging, but she continues regardless. She can feel his heat, feel the veins pulsing, and Sean begins to breathe heavier as she works her hand in a steady rhythm.

"Just be careful," she whispers, and glances over at the patio again. Their mother is now turned away from the pool completely, leaning on the table as she stares at her cell phone. Their father appears to have gone back inside, perhaps to gather more items for the grill.

He nods again, and slowly places his hand over her left breast, cupping it and feeling it's weight. At first his hand doesn't move, simply enjoying the feeling of it, and then ever so softly he applies pressure, squeezing, marveling at the soft, warm flesh under his fingers. She stiffens but makes no attempt to stop him, instead closing her eyes for a moment and inhaling sharply. Inspired, he squeezes it harder. His fingers find the hard swell of her nipple and pinches it gently, and now it is Ally's turn to cry out, louder than she should have.

They both freeze, then look quickly at their mother. She turns around in her chair, but does so very slowly, giving them ample time to separate before she sees anything too incriminating. Being that it was underwater and hidden by the lip of the pool, Ally continues to hold on tightly to Sean's cock, continuing to stroke it even when their mother begins to speak to them. This arouses Sean even more.

"Everything ok with you two?" their Mom asks. There is still no sign of their father, and this makes Sean nervous. If he looked out the window from wherever he was, most likely the kitchen, he would see them but they wouldn't see him.

"Yeah, Mom, we're good!" Ally answers. Her hand doesn't stop it's steady pumping underwater, and Sean bites his tongue so that he doesn't cry out in front of his mother.

"Well... ok," she says, already turning back around again. "What are you two doing, anyway? You're just standing there."

"I'm... teaching him how to hold his breath..." Ally stammers, then she looks at Sean and smiles. He is in fact holding his breath right now, just not underwater.

"Ok. Just don't drown your brother," Mom says, now fully returned to her original position of ignoring them. They start to breathe a sign of relief, when suddenly their Dad returns. He is carrying a bottle of barbecue sauce and a grill brush to coat their dinner with.

"Hey, you two, dinner isn't going to take long. You might want to get out now so you can dry off. You got all summer to drown each other," their Dad says, and he stops, looking at them as he waits for their response.

Sean's cock begins to shrink under his father's stern gaze, despite the depravity of the situation. He has a sinking feeling now that his father did in fact see something, and his heart is flooded with terror. Ally's hand stops moving and suddenly snaps out of his swimsuit.

"... ok, Daddy..." Ally says, her voice sounding small and meek. She stares at her father with wide eyes as if she is trouble already.

Sean swims to the pool ladder quickly, afraid now to look at his father. Ally slowly follows, and their Dad returns to the grill. The incident seems forgotten.

But it wasn't, not by them. Sean was definitely never going to forget it. As for their father, they weren't sure if he had seen anything or not. They just didn't know. The way he stared at them until they left the pool, the way he stared at Sean especially, was a little terrifying. They went upstairs and changed their clothes, and this time Sean didn't even make an attempt to peep at his sister. He was far too nervous that his father was watching him closely now, and somehow by proxy that included his bedroom. They strip off their wet suits and change back into dry clothes quickly, then return to the patio table at different times. Sean makes it back first, and he sits down nervously next to his parents, waiting for a scolding that never comes.

They spend the rest of the evening eating barbecue chicken with a traditional array of summer foods, including the watermelon that Mom had been cutting earlier. There is no mention of the forbidden hand job, and their father's mood seems normal. Nevertheless, Sean notices that Ally is acting nastier than usual towards him, far more than the normal brother-sister banter they share. It was perplexing for Sean, and he worried he had done something wrong.

Naturally, it made perfect sense to Ally.

_____________________________________________________________

That evening Sean decides he'd like to go to bed early. Despite his father acting pretty normal, he can't shake the feeling that he knew something was up. He seemed quiet... but then his father was always quiet. It made it extremely difficult to gauge his mood.

Ally continues to harass him endlessly, making several remarks to the affect that he is ugly and would never find a girlfriend, and rather than deal with this unsettling change in her attitude he decides it's safer in his bedroom. He sneaks away with only the faintest "good night" to his parents, rushing quickly up the stairs.

His evening passes slowly, and he finds himself bored hiding in his bedroom. Ultimately he decides to just go to bed for real. There is a gentle thump as he hears Ally close herself in her bedroom next door. He considers using the peephole to watch her undress, but then decides he is too angry with her. Instead he stares up at his ceiling, feeling restless and horny again. Sleep is a long time coming, and it is well after midnight when he finally closes his eyes.

_____________________________________________________________

For a moment, Sean is confused by the sensation of something warm and wet wrapped around his cock. His sleep-addled mind struggles to comprehend the reality of the situation.

As consciousness fully took hold, he realizes with a jolt that it was his sister's mouth on his erect shaft. Ally was sucking his cock.

Her eyes look up at him, a mischievous sparkle in her eyes, and she smirks, not breaking her rhythm. The sight of her lips stretched around his cock is a vision he never thought he'd behold. Her brunette hair is pulled back in a ponytail, a couple of locks hanging free at the sides creating a tantalizing frame. She's wearing nothing but panties and a small, loose-fitting tank top that hang low, offering him an enticing view of her large, smooth breasts as they dangle provocatively in front of her.

The sensation grows more intense as she began to move her head more quickly, her tongue swirling around the head with each bob. His cock is engulfed in a sea of wet heat, and the sound of her slurps and moans grow louder as she realizs he is awake. Her hand cups his balls, gently massaging them as she sucks. Sean's hands find their way to the bed sheets, tightening into fists and holding on tightly.

"Ally... what....?" he breathes, but then stops. He knew what she was doing, she was finishing what she had started earlier in the pool. Only she was doing it in a more effective manner. And besides, he really didn't want her to answer him, because then she would have to stop.

"Mmmmm...," is the only answer that Ally gives him. She looks up at him and smiles, her lips sliding up and down his hard shaft, her beautiful green eyes locked on his.

Sean sits up halfway, leaning on his elbows, trying to get a better view of his sister sucking his member. This is a moment he wants to remember forever, to memorize every detail, and he finds himself vaguely wishing that he had his phone nearby so he could take a video of it.

Ally's hand reaches up and grabs hold of his shaft just below her mouth, and begins stroking him in tandem with her lips. She closes her eyes, seemingly hard in concentration as she works him faster, her tongue swirling up and down the sensitive underside of his engorged cock, her lips leaving glistening trails of saliva.

With a sudden jolt, his hips buck involuntarily as the pleasure grows unbearable. Ally look up at him, feeling him swell in her mouth, sensing his impending climax. She swirls her tongue around the head of his cock before taking him deeper. He gasps, his body tensing, as he feels the warmth of his orgasm building.

And then, with a muffled groan, it hits him. He cries out his sister's name as his cock pulses and throbs, shooting hot, sticky cum between her lips, filling her mouth. She doesn't flinch, instead, she eagerly swallows each spurt, savoring the taste of him. A low moan of pleasure escapes the back of her throat, deep and guttural and full of desire.

Finally his body shudders, once, twice, then lies still, his load spent. Ally withdraws slowly, being sure to collect every last drop of his semen as she does, cleaning him off and making sure to lick off the last little drop that collects on the tip.

Sean lays there, still propped up, panting heavily. His eyes are still squinted from the powerful orgasm he just experienced. Ally looks up at him and smiles sweetly, chewing lightly on a thicker chunk of his load for a moment before gulping it down. They look at each other, neither one of them sure what to say in that moment, and Ally wipes her mouth.

Finally, Sean sits up fully, his cock shriveling in his lap. Ally smiles up at him, her eyes sparkling. "Told ya I'd help you out, little bro. Sorry I was being a bitch earlier. Didn't want Mom and Dad to be suspicious, y'know?"

Sean nods, finally understanding. He still isn't sure to say.

Ally stands and makes her way to his bedroom door. She is wearing only a pair of small, lacey white panties, and Sean can't help but stare at her perfectly round, soft cheeks as she walks.

She reaches the door and opens it, then turns and looks back at him. There is a mischievous glint in her eyes as she says, "Good night, Sean."

A faint smile crosses his lips. "Good night, Ally," he finally whispers to his sister, the girl of his dreams.

And with that, she is gone.