[Part 3](https://www.reddit.com/r/eroticliterature/comments/v1xjix/finding_my_28m_sisterinlaws_18f_sexuality_for_the/?utm_source=share&utm_medium=ios_app&utm_name=iossmf)
Writing is fun and a stress relief, but also doesn’t pay the bills. If you enjoyed the stories, leave a tip on CashApp at $NotTyWriting. Every $1 tip makes a difference and encourages me to write more for you all.
_____________________________________
Thanks to everyone reading my first set of stories. If you’ve read the series all the way through, I’d love to know what you think.
Comment or send me a chat and let me know. I especially appreciate the feedback of women, as I think my writing style is geared more towards women.
_____________________________________
Disclaimer: This story has a bit more kink, and more graphic than the other parts of the series
*Scene Setting*
We spent that week acting as if we were married. Luckily, I only had to spend one day at the office. The rest of the week I was working from home, with frequent breaks spent laughing, flirting, kissing, and making love to my sister in law. It was a blissful week and neither of us wanted it to end, but we knew it had to.
Abby returned and we all settled back into our routines. I was working from home twice a week. When Campbell was there and was in the mood we would hook up in various locations throughout the house, and sometimes in the pool. We managed to come together two to three times per week in spite of my working and her schooling.
It was a brisk fall day in early November when I heard the door shut and I knew she was home from school. I went ahead and started logging out of my work programs and shutting down my computer for our next rendezvous. That’s when I heard a second voice and giggling coming down the stairs. I closed my laptop and began straightening up my desk as if not to assume that we were about to devour each other in lust.
I saw Campbell step into the doorway.
“Hey Ty, this is Lexi. She’s my big at Phi Mu,” Campbell said, pulling the still tanned arm of someone next to her.
A dirty blonde headed girl steps into the doorway. She was very attractive with her big blue eyes, perfect smile, and smooth brown skin. She was built similarly to Campbell, but less muscle definition. More of a cheerleader than a sports type of girl, if I had to guess.
“Hi, Lexi, I’m Ty. Nice to meet you,” I said putting on my professional persona.
Lexi giggles, “It’s nice to meet you, too, Ty. Campbell has told me SO much about you.” She smiled a mischievous smile.
I gave a curious glance but didn’t think much about it after that. Now was as good of a time as any to go to the gym since I was already logged out of my computer. I went up stairs and changed into my Under Armour workout gear, grabbed my swim trunks, and took off.
When I arrived back home, Campbell’s car was still in the driveway. I came into the kitchen and grabbed a Gatorade from the refrigerator. I closed the door and Lexi was there. She was wearing black Lululemon leggings, undoubtedly a exercise tank top under a stone colored Lululemon quarter zip exercise pullover.
“So you’re *the* brother in law,” Lexi emphasized.
“Yeah, I’m the brother in law. It’s funny, I haven’t heard that much about you.”
“Well I know all about you. And Campbell. And the bathtub, and the pool, and the living room, and your office, and the laundry room, and the shower. Need I go on?” Lexi knew more than what she needed to, and I could kill Campbell for blabbing.
“What are you getting at?” I questioned.
“Well I, like you, think Campbell is unbelievably sexy. Now I’m not a lesbian, but I am in college and I am curious and willing to experiment,” she began, “Campbell is not, however. She did slip up and tell me about the two of you though. So I told her that I wanted to sleep with her in return for my silence. She said she wouldn’t do that unless you were involved. She must really have a thing for you. So, my proposal is the three of us spend some time together getting know each other more intimately. If not, I may just stay until your wife gets home. Abby, right?”
This conniving little bitch just blackmailed me into a cheating threesome, all just to get to Campbell.
I didn’t say anything, just glared at her in anger.
“I’ll take your silence as we have a deal. I’ll be back the same time next week.”
I went back downstairs to work, but could barely focus. I could hear Lexi flirting with Campbell from Campbell’s room. Campbell was flattered I could tell, but not fully comfortable with the idea of being with a girl.
Two days later was Campbell’s next day at home while I was at home. I called her in my office.
“Campbell, what were you thinking telling Lexi that we have been sleeping together?”
“I know, I’m sorry. She was going on about sex stories from high school and kept pressing me and I told her that I had only been with one guy and it was recent. Then then she tried guessing guys from different frats. I told her that he had already graduated and lived in town, then she just kind of managed to guess. I didn’t mean to.”
“You know what she wants to do, or she’ll rat us out?”
“I know. I don’t know how to do that.” She confessed
Well you know how you researched what to do with us? You’ll have to do some research. Tuesday is coming quickly.” I said before letting her leave my office.
_____________________________________
*Good Stuff Starts Here*
Tuesday came, and roughly the same time as last week I hear the door close and Lexi giggling and having a good time. Campbell had the shy nervousness associated with being uncomfortable with what was about to happen.
The two girls came to my office door. I had already logged off.
“Why hello there, Ty,” Lexi said smugly, “Campbell, why don’t you go slip into something more comfortable.”
Campbell rolled her eyes and walked into her room.
“I got you a little something while I was out shopping this weekend. From what I hear you are a size large,” she said with a wink as she sat a gift bag on my desk, “change into these and give us five minutes and then come into Campbell’s room.”
She kissed my cheek and put her hand on my chest, rubbed down my abs, and back up.
“I love a man with stubble, and in good shape to boot,” she winked again and walked out, purposefully giving and extra sway to her walk. I’ll give it to her she was sexy, but she may be evil, and definitely can’t be trusted.
I looked in the bag and there was a navy blue with light blue stripes pair of TommyJohn boxer briefs. I rolled my eyes and began to change. I waited the five minutes and ventured across the hall in my new underwear and knocked on the door.
“Come in,” Lexi invited.
I opened the door to Lexi and Campbell both laying on the bed. Campbell was wearing the black lace set that she wore the first night we were together. Lexi wore a light pink lace bra and g-string. There were candles lit around the room, strictly for aesthetics as the sun glimmered off the water through the sheer curtains. I noticed some music playing, it sounded like Ed Sheeran but had a hip hop sound to it. It sounded like something I would like.
Campbell’s abs were on full display, she smiled as I walked in, I could tell I made her feel more comfortable. Lexi didn’t have abs by definition but had a very sexy tight tummy with breasts a bit smaller than Campbell’s. She lit up when I walked in the room, giving me an elevator look, and then looking at Campbell with lustful desire in her eyes.
Lexi got up on her knees in the bed and gave me the “come here” finger with a naughty look in her eye. I walked to the edge of the bed. She wrapped both arms around my neck and kissed me. Her lips were soft but I much preferred Campbell’s. She slipped her tongue in my mouth and it was evident that she knew what she was doing.
“Campbell, why don’t you join us?” Lexi said between kisses.
Campbell got on her knees and knelt beside Lexi on the end of the bed. I pulled away and kissed Campbell passionately to comfort her. Lexi didn’t miss a beat, moving Campbell’s hair to the side and kissing her neck. I felt Campbell gasp. Lexi moved behind Campbell and continued kissing her neck as she cupped and massaged her breasts. Campbell let out a moan at this. Lexi took it as a signal to continue and took off Campbell’s bra. Lexi went from two hands on Campbell’s tits to a hand there and her free hand massaging my cock.
“Campbell you were right. He is a large.” She said smugly.
She got in her hands and knees and crawled around to be beside Campbell. She pulled my underwear down to reveal my cock standing at full attention. She took me in her mouth.
Campbell gave me a look that I hadn’t seen her give before and dropped to her hands and knees. Lexi took me out of her mouth and Campbell joined her in sucking my cock. They were kissing and licking and sucking. It was almost as if they were making out with my dick in the way. They took their mouths off my dick and began kissing each other. I reached down and unhooked Lexi’s bra.
They came back to my cock. Campbell took me in her mouth while Lexi had both my balls in her mouth and worked them with her tongue. I wasn’t sure who it was but someone’s hand had slipped between my legs and was massaging my asshole. I took my cock out of Campbell’s mouth and began blowing my load on both of their faces. That was a feeling I hadn’t experienced.
They started making out with each other, taking turns licking the cum off each other’s face. I got on the bed and positioned Campbell on her back. I started kissing her neck, moving down to her tits, Lexi joined me in sucking her tits. I continued my journey down and started eating her pussy while Lexi stayed at her tits. Campbell was moaning more than I had ever heard her moan.
Lexi got up and took off her g-string and straddled Campbell’s face. Lexi started moaning and I knew that Campbell had done her research. Lexi bent forward, giving me a view of Campbell working and her asshole, which looked like it had seen some action. She turned and looked at me and bit her lip while she was moaning. I felt life pumping back into my cock and pulled away from Campbell. Lexi followed suit and lay down on her back. I stood up and pulled Lexi to the end of the bed. I sleep my cock on her smooth pussy with ease. She was as much of a slut as I expected. Campbell, taking me by surprise straddled Lexi’s face facing me. We made out while I fucked Lexi’s slutty pussy and Lexi ate Campbell’s pussy.
After several minutes in this position, I pulled out and dropped to my knees and began eating Lexi’s used pussy. I hadn’t cum again, yet. I was saving that for Campbell. I felt and heard Lexi climax. That was queue enough for me to switch positions.
I grabbed Campbell’s hand and led her to the edge of the bed and turned her around and bent her over. I put my cock in her and was gripped much tighter by her. Lexi got on her knees and stuck her tongue in my mouth for a few moments before moving her mouth to Campbell’s left butt cheek. She reached around and rubbed her clit briefly before being her hand back around and teasing her asshole. Campbell squirmed and moaned in pleasure.
Lexi got up and moved behind me, I took over massaging Campbell’s asshole with my right thumb. I felt two hand on my ass cheeks and suddenly a warm, wet sensation unlike anything I had ever felt. Lexi was eating my ass and I couldn’t get enough of it. I quickly began unloading cum in Campbell’s pussy. Pump after pump into her 18 year old body. I groaned and moaned in pleasure. Lexi chuckled at her success. And pulled me away from Campbell. She flipped Campbell over and began eating her dirty pussy filled with my cum.
Campbell grabbed my hand and tugged at me to come closer to her. I obliged and she took my softening cock in her mouth to suck out the last drops of cum. Lexi continued her work while Campbell was preoccupied with me. I looked down at Lexi, we made eye contact, she lifted her head slightly to reveal her tongue covered in my cum straight from Campbell. My cock began coming back to life, and Campbell’s gargling sounds of deep-throating confirmed it.
Lexi laid down on her back with her legs hanging off the bed and motioned for me to come to her. I obeyed and slid my dick inside her once more. Campbell knelt beside her and they began to pass what was left of my cum from tongue to tongue. Campbell then started sucking on Lexi’s nipples one at a time while massaging the other.
I kept up my work on Lexi, but after already cumming twice, I had built up some resilience, and Lexi wasn’t tight. Campbell had grown tired of watching me fuck someone else, she got up and stood behind me. She tiptoed up to my ear and started nibbling. She started dirty talking, something I hadn’t heard her do.
“You’ve made me jealous fucking that dirt slut. You’re in so much trouble.”
I felt more warmth in my cock.
“When you finish in her. You’re going to eat that dirty pussy and get your cum out of her. If I can’t have your cum, she can’t either.”
I kept pushing.
“I’ve got something else for you.”
She slipped a finger in my asshole. It was the same hand from earlier. She had done her research.
A mixture of Lexi’s moaning, Campbell’s dirty talk, her nibbling on my ear, and her finger in my asshole made me explode for a third time. When I had finished, Campbell pushed me down to my knees and shoved my face into Lexi’s pussy.
I had never eaten a cum pussy before but I was obeying my instructions. I started licking her clit and she continued moaning. I noticed some leaking and licked it up. I continued licking and her moaning picked up. I was licking faster and faster, Lexi started screaming.
“I’m going to cum!”
She came indeed. I was blasted in my face with a mix of hers and my own cum. She had squirted in my face. No wonder she had been so experienced.
We all collapsed on the bed in a euphoric exhaustion.
“Your secret is safe with me,” Lexi said as she leaned to each side of her and tongue kissed each of us, “I’m going to take a shower.”
Campbell turned to me, “The rest of your punishment is that you’re not allowed to fuck anyone else besides me for a month, even Abby. Anytime we’re alone, I better have your dick in my hand, mouth, pussy, or ass. Got it?”
“I can’t do that to Abby,” I responded.
She grabbed my cock and balls and pulled.
“Got it?”
“Ahhhh ahhh, yes ma’am.”
Source: reddit.com/r/eroticliterature/comments/v4abg8/finding_my_28m_sisterinlaws_18f_sexuality_for_the