Mona Gets Naked in the Waterfall

**Chapter 6**

*(Can be read independently.)*

**Background:**

Tina and I (Rohan) are having an affair. Our little boys are friends. Sonya is my wife, but we are no longer in love. I have her implied consent to step outside the marriage as long as I don't rock the household. Mona is Tina's little sister. Mona is staying with Tina for some time until she finds a job. Jay is Tina's husband, a consultant who is typically gone most weekdays. Tina married Jay for a better life and stability, and Jay perhaps for her beauty. I have regular meetings with Tina and Mona in my office condo. We lounge and spend time together. I have sex with Tina while Mona hangs around in the living area. Recently I spent some time alone with Mona in a jacuzzi where I got to see her tits for a bit and gave her near-naked body a massage which she claims is the best she has ever had. Tina forbade us from having sex, so we just made out after the massage. Tina and Mona win a bet by making me cum with a lap dance. In the process I get to make out with Mona.

---

There was undeniable attraction between me and Mona, and the more time I spent with her without having sex with her, the more it was driving me crazy.

I had seen her tits in the jacuzzi. I had rubbed my hands all over her body when I gave her a full-body massage. I had sucked on her sheer bra-covered tits and squeezed her boobs as she ground her panty-clad vagina on me. She made me cum with a lap dance and she had climaxed herself in the process on top of me. All this, but we did not have sex. LIke I said I was going crazy in lust.

I kept thinking of ways to get Mona to be with me alone for some time, but nothing clicked. Every time I saw Mona it was with Tina around. I was getting good sex with Tina and at home with Sonya, so it wasn't that I was craving for sex. I wanted to have sex with Mona.

I knew competition made them push boundaries. So I would make imaginary scenarios in my head. Maybe I can get the sisters to compete to see who gives a better blowjob. Maybe they will compete to see who gets off first with me fingering them together. I know it all sounds ridiculous. I never proposed either of the contests.

Mona knew the effect she had on me. She kept teasing me and pushing the boundaries whenever she got a chance. She kissed me a few times when Tina was in a different room. She would blow kisses to me. She would touch me and be flirty with me. She would act like she was about to flash me but never did.

I eventually got an opportunity to spend some time with Mona without Tina being around.

A guy I went to university with was put up in a nearby town and he was going to be free tomorrow morning. He reached out to me earlier in the day and asked if I wanted to go on a hike with him tomorrow. I said yes. It had been quite some time since I had met him, so it would be nice to catch up. We weren't exactly very close friends, but we hung out in college from time to time and briefly stayed in touch, wishing each other birthdays and saying we should meet up.

When I was sitting with Tina and Mona in my office after having sex with Tina, I brought up this hike.

"It's a beautiful hike," I said. "You girls should join."

"Yeah right," Tina replied. "You know I can't. I have responsibilities, Rohan." She was referring to her son. Jay was gone during weekdays, so she was responsible for her son every day of the week by herself.

I had asked Sonya if she would drop and pick up our son tomorrow, and she had agreed.

"I can come," Mona said, "but who is this guy?"

"He is fun. I went to university with him." I looked at her. "He might be single too. Maybe you guys will hit it off."

"Maybe we will..." she answered. Mona was not in a relationship and was trying to settle before she started dating again.

"Okay then," I said. "We can start at 7 a. m. We will pick him up and drive to the start of the trailhead. Pack some snacks and water."

"Sounds like a plan," Mona said.

We hung around for a bit more as I played with Tina's hair, and eventually it was time for Tina and Mona to leave.

---

I got up early, prepared breakfast for me, Sonya, and our son. Packed his lunch and wrote a note for Sonya thanking her. Packed snacks, bottles, and a beer six-pack.

I started my car and waited a block away from Mona and Tina's place in a hidden alley. Eventually I saw a silhouette of a girl running towards my car. It was Mona. She reached my car and I rolled my windows down.

"Hello there."

"Sorry, sorry. I'm late," she said, slightly out of breath. "I got up a little late and rushed."

"No worries," I told her. "I'll make up the time on the drive."

She sat in the car and I started driving.

She was wearing yoga pants and a contrasting body-hugging jacket made of similar material. It showed her figure well without showing any of her body.

It should be illegal to look so good, I thought to myself. As I was mentally admiring her beauty she asked,

"What?"

Oops, caught, I thought.

"Nothing. You look good."

"Thank you."

"You don't look too bad either."

"Well, thank you."

We started talking about the hike, the elevation, insects, whether there would be bears, snakes, restrooms. I made my best guesses. I had only read briefly about this hike, but I made it sound convincing. I was relying on my friend who suggested this hike to know more.

Twenty minutes into the drive, my phone rang and I picked it up on the car speaker. It was my friend who I was about to pick up.

"Hey..." I said, excitement in my voice.

He did not know I had Mona with me. I had figured I would keep it a surprise and introduce Mona as my assistant.

"Dude... I have to bail on you..."

"Why?" I asked.

"I think I have diarrhea. I ate out last night and caught a stomach bug. I feel like shit."

"Oh man... I was looking forward to it."

"I feel bad, man. I'm here for the whole week. Maybe we will meet after a couple of days."

"No worries, man. You take care."

"Thank you, man."

Mona stayed quiet during the call, but she heard everything.

"Now what?" she asked, looking at me.

"Well, we can still do the hike... or..." I paused. "I know a hike I have been on before. It's not as popular, but it's relatively closer and has better views and a waterfall at the end of the stream."

"You make the call," she said. "I am okay either way."

"Okay, let's go to the one that's closer to us."

I picked this one as I knew it was a lesser-known trail and it would not be busy given it was a weekday morning. Even on weekends when I had hiked there I never saw anyone.

We arrived at the roadside. The trail was so tiny and unknown that it did not have a dedicated parking spot as well. There were no cars there, as I expected.

"Are we at the right place?" Mona asked.

"Yes. I told you not many people know about this. We might be the only ones hiking here today."

"Okay," she said, and stepped out.

I picked up my hiking bag. We stepped out, put on some bug spray, wore glasses and hats, and started walking.

A few minutes in and we hit the stream. The hike from there was just to follow the stream into the woods where it eventually drops about twelve to fifteen feet, creating a little waterfall. There was a small cave behind the waterfall, and I had been there a couple of times.

There were no markings, but a path could be seen because of people hiking on this unmarked trail.

We kept walking along the side of the stream.

We were talking, laughing, and sharing general things.

Then Mona got tired and we stopped for a break. We drank some water, ate a quick bite, and Mona acted like she couldn't walk anymore, so I lifted her in my arms. That brought a nice smile to her face, and she kissed me softly.

I put her down after about a hundred steps.

We walked and eventually made it to where the stream drops over the small cliff. There is a path beside it but a little further away from the water, which we took to get down. We walked and looked around at the waterfall.

"So that's the hike and that's the waterfall," I said.

"It's very pretty," Mona replied.

It was a pretty decent waterfall--not so good that it would be famous, but not bad either.

It had rained a few days ago, so there was enough flow over the falls that it created a nice curtain over the cave behind it.

Mona lowered herself to touch the water.

"Oh, the water feels so nice."

I touched the water with my hands as well.

"Yeah, it is. There is a small cave behind the waterfall."

"How do we get to it?"

"Well, through the water."

"Bummer. We don't have swim clothes."

I looked at her. "Bummer."

We sat near the water and ate some more snacks. I offered her a beer, which she readily took, and we cheered and started drinking.

It felt like we were in the middle of nowhere, yet we were only about an hour's drive and an hour's walk from our homes.

"I am thinking of going in the water," I said.

"Do you have an extra pair of clothes?"

"No. I will just strip to my boxers and get till knee-deep."

"Okay. Have fun. I am staying here."

I got up, removed my shoes, socks, T-shirt, and track pants, kept them nicely over my backpack, and was left only wearing my boxers.

I started going in. I was thinking I would make it to the waterfall, but it was deeper than I thought. So I stopped midway.

"What happened?" she asked.

"If I go any further my boxers will get wet."

Mona was playing with the water, sitting by the bank of the stream.

"Why don't you come in?"

"I don't have an extra pair of clothes."

"Neither do I."

She got the hint. She looked around.

"Are you sure?"

"There is no one here."

Mona got up hesitantly, checking to see if anyone was around.

She then removed her jacket. She was wearing a crop top inside. She folded her jacket. Then removed her shoes and socks. Then she lowered her yoga pants, nicely folding them and stacking everything near my backpack.

She looked beautiful in the white crop top and simple grey panties. The panties were not so revealing, but I still saw ample ass when she was turned around stacking her clothes.

She waded her way into the water and made her way to me.

"It is nice," she said when she reached me.

"It's nicer now that you are also here."

I threatened to push her down into the water.

"Rohan... no... no... I don't want to get wet."

"Ahh..." she yelled as I lifted her.

I was not going to push her. I was just playing with her.

I lifted her just like I had before in my arms.

"Rohan, I will kill you if you throw me in the water."

"I am not scared."

She leaped up and kissed me.

"Now let me go."

"By dropping you in the water?"

"No, no, Rohan."

"Alright, alright..." I carried her all the way out.

We sat on a rock nearby.

"Is the cave behind--is it any good?" she asked.

"Yeah. It's been a while since I have gone in there, but it's pretty good. You know what? I want to go there."

I stood up.

"Mona, close your eyes," I said, putting my hands on the waistband of my boxers. She did as instructed. I lowered my boxers and threw them on top of my clothes. I walked hurriedly into the water to the point I was waist-deep.

"What are you doing?"

"Well, I don't want to get wet either, and I want to go in the cave."

"You are crazy."

"Oh come on. Join me. There is no one here."

"No, I am good here," she said.

I swam my way to the waterfall and enjoyed the water falling on me. The heavy flow of water gave me a nice shoulder and back massage, and then I went under the curtain of the water and behind the fall. I stepped up into the cave.

It was a nice deep natural cut-out. The water splashed from the falls creating a constant mist. The cave was not visible from outside.

I heard Mona yell.

"Where are you..."

"In the cave."

I stepped out again, dunked under the falls, and swam out a little bit so I could stand and the water came up to my shoulders.

"Is it any good?" Mona was curious.

"It is" I confirmed.

"I want to come as well," Mona said.

"You know what to do."

"Look away," she told me, and I did as instructed. There was silence for some time.

Eventually I heard Mona's footsteps wading in the water.

"Don't look," she called.

I said nothing.

She swam closer to me.

"Okay."

"This feels nice," she said.

I turned around and looked towards her.

Mona was completely submerged in water. Her hair and face were wet. I could maybe see about a foot into the water and could see some of Mona's breasts and nipples through the water, but the moving water provided some privacy and I did not try to look too hard.

"Yeah. I think you made a good choice getting in. Do you want to dunk under the waterfall?"

"Yes."

She held my hands. We dunked into the waterfall and popped our heads on the other side.

As she floated back up she bounced a little too hard, and for the first time I saw her boobs bounce above the water. It was only for a split second, but it instantly started having an effect on my dick. She dipped back in and wiped her face. I don't think she noticed I got a glimpse of her tits.

Mona had amazing C-cup natural breasts that were so much fun to squeeze and suck when she gave me a lap dance a few days ago.

We stayed there for a little bit, splashing water on each other and entering the waterfall to get a massage by the falling water.

"Stay here. I will get a beer for us," I said.

I swam out and got beer. She dunked out of the waterfall and she saw me get out and grab beer. When I turned back I saw Mona looking at me, at all of me. It made me a little conscious, but I ignored it. I was holding one can in each hand. I walked in water until my waist submerged, then swam, and we both again went behind the water.

I handed her the beer. We cheered.

"Hey, you didn't look away."

"You didn't ask me to."

I had not.

"Great call on getting beer."

We continued to sip our beers and talk about general things.

When we finished the beer, I asked, "Do you want one more?"

"Yes. Let me get it," Mona said. She took my can from me and started swimming to the shore. I could see her ass float on top from time to time. When she made it to the shallow end she stood up, put the empty beer cans on her boobs, and turned and smiled. She caught me red-handed watching her.

I yelled, "You didn't say to look away!"

"I know," she called back.

She reached into my bag and dug out the last two cans. She held one can right in front of her vagina and the other she held in her left hand, which she tried to cover her breasts with. She was not very successful with this. As she walked her hands moved and her boobs bounced around. I could see her left boob shake and her nipple was clearly visible, even from the distance. She waded her way into the water and reached a point where her waist was now submerged. She leaned into the water, flashing me briefly, and swam up with the beer cans.

I held her hand. We both dunked into the waterfall and came up on the other side.

We stayed there and enjoyed another beer and talked about general things.

When we were done drinking the beer, I asked,

"Do you want to get into the cave?"

Mona studied my face, then said with a smile,

"That's why I came in the water."

She knew what it meant--she would have to get out naked in front of me. I was perfectly willing to get out naked in front of her.

"Okay. Let's do it," she said again, snapping me out of my fantasies back to reality.

I took the first few steps up and gave Mona my hand to climb out. I looked towards the cave and gently tugged on her hand as I watched my path on the slippery rocks. She was also focused on the rocks. A slip there would be dangerous. I only turned around once I had stable footing. When I turned, Mona had climbed out completely of the water. I looked at her body as she looked into the cave.

We were both dripping, freshly out of the water. We were also being constantly bombarded by the mist of the waterfall.

My gaze landed on her body. Water rolled down from her head to toe. I caught a drop travel from the side of her face, rolling down on her neck. It rolled right between her breasts as I took in the sight of her breasts. They were perfect. Her nipples were perfectly hard due to the cold water. Her breasts were perky yet big. They defied gravity. I was starting to get hard just by this beautiful sight. Her breasts were covered by small water drops.

In that moment I wanted to just suck on those beautiful tits and suck them dry.

The drop continued its downward journey, taking a curved path on her flat stomach, and then took a turn and rolled down on her right thigh. I got a view of her pussy. It looked beautiful, perhaps the best vagina I have seen in my life. Her lips were swollen and a little bit of pink showed through. She had no hair anywhere in the pubic area.

Her beautiful, young, fit body mesmerized me.

"Beautiful," she said, looking at the cave.

The cave was beautiful, big enough for two adults to move around a bit, some rocks and ledges to lean on but no tunnels to explore. It was hidden behind the water curtain falling over it. You could only really see it when the water flow was less in the dry season.

"Yeah," I said, looking at her.

She looked at me and realized I was looking at her and not the cave.

Suddenly she became aware that she was fully naked.

There was no hiding my excitement as I had a full boner.

She looked at me, blushed, and said, "Rohan, you like caves too much."

I took a step closer to her.

"It's not the cave. It's you."

I leaned in and kissed her. Softly at first.

She kissed back softly. My hard dick slammed right into her belly and I pressed her in with one hand. My other hand found the back of her head.

We both kissed for a few minutes and the intensity of the kiss started growing. It went from soft to a wet kiss to a deep kiss and to a hungry kiss. I did not know I could get any harder but with every passe=ing second more blood left my brain and entered my dick.

I moved my hand that was on her back down to her ass and squeezed it. She raised her thigh in response and put it around my waist. I brought my other hand down to the other ass cheek and squeezed that. She jumped on me with the other thigh and put her arms behind me on my neck.

I took a few steps, placing her against the dark walls of the cave, and kissed her. She kissed me back. My left hand supported her weight and my right hand went for her boobs. Since the first time since I had seen Mona I had lusted for this moment--to have her breast in my hand. A slow but fortunate turn of events had led to this moment. I was now squeezing Mona's boobs as we made out. My hard dick was rubbing against her abs and pussy.

After several moments, Mona broke the kiss.

"We can't fuck."

I snapped out.

"Huh..." was the only sound that came out.

I was not doing these things with planned intention. I am a simple guy. I see a beautiful naked girl who is also attracted to me, I get primal and pursue her.

But she was right.

"Tina... won't approve," she said.

"Right, right..." I went in to kiss her again.

After a few minutes I said, "Okay. We won't fuck, but I can't let you go."

I let her stand down and lowered myself by kissing her neck. I found her left boob, kissed around it, and took her nipple in my mouth. My hand found her other boob and I squeezed them and pinched her nipples. Then I sucked the other boob and my hands found her pussy lips.

They were wet and not from the water of the fall. Mona lowered her right hand and held my cock. The way she slowly gripped my cock sent a current through my body.

I was exploring the wet outer lips of her pussy with my finger when she gripped me. I reciprocated by slowly sliding the top of my middle finger inside of her, splitting her slightly.

"Ahhh..." she moaned.

I went back to kissing her and she started slowly moving her hand up and down my hard cock.

For some reason it felt like I would cum soon, maybe because this had been a fantasy for a long time. So I stopped her, spun her around. I pulled her into my body. Her ass cheeks rested against my thighs and my cock rested on the top of her ass.

My left hand found her left boob from her side and my right hand gripped her waist and I slid it towards her pussy.

I again traced a path on the outer lips, collecting some of the juices that had seeped out. I slipped my finger little by little inside her.

She was warm, wet, and tight. Her pussy gripped my finger tightly. I can only imagine how tight my dick would feel inside of her.

I slowly moved my finger in and out of her. She moaned in approval.

"Rohan, yes... ahhh... ahhh..."

She started grinding against my cock.

I found her clit and focused on it and she shook a bit.

"Yes, keep going, Rohan... ahh... ahh... don't stop."

I had no intentions of stopping. I increased the pressure I exerted with my finger and she climaxed by shaking vigorously with my finger inside. She pushed my finger out as it became too sensitive.

She spun and planted a kiss on my lips, holding my cheeks.

I picked her up again and she put her legs behind me. She nudged me towards the rock in the cave and I sat with her on top. She lowered one leg to the floor of the cave, pushed my dick against my abs, and aligned her wet slit perfectly in line with my dick. She slid up and down on my dick.

I felt the heat of her pussy on my dick. This was dangerous. Many times my dick almost entered her, but it did not. She continued grinding on top of me and my hands found her breasts again. Then I pulled her in and sucked on her boobs.

She was moaning and grinding on me and I sucked her tits alternately.

Eventually I tensed up and shot my load between us, creating a mess.

She continued grinding till the pulsating stopped and every last bit of cum was drained from me.

She collapsed on me, and I lay back taking her on top of me. There was just some water and my cum between us. We stayed there without speaking for several minutes.

I had just fucked Mona but technically not fucked Mona.

"Next time you get close to me like this I don't think I can resist," I said. "I will fuck you."

She blushed.

"We shall see."

She got up.

"Let's go. I don't want to be late and Tina suspect anything."

"So we are not telling Tina about this, right?"

"Right. I don't tell her everything and you better don't. You will get in more trouble than me."

I didn't say anything, but on the drive back I mulled over her words. She was right. Mona was Tina's sister, and if she got angry they would make up, but Tina could end things with me if she got angry.

We got out, dried ourselves using my T-shirt. I walked back topless and hung my T-shirt over the window for it to dry in the drive. The walk and drive back were rather uneventful.

I dropped her one block away at the same spot I had picked her up from and drove back home.