Kelly's Diary 124 - Cousins Get Together - Cover

Kelly's Diary 124 - Cousins Get Together

Copyright© 2025 by Kelly85

Chapter 4: Kristen and I Watch A Brother Fucking His Sister

Incest Sex Story: Chapter 4: Kristen and I Watch A Brother Fucking His Sister - It had been quite a week. Once my cousin Tammy gave her virginity to my dad it was like a door opened for her, leading her to a whole new way of life. Her father had her the next day and then she finally did it with her brother a couple of days later. I guess it shouldn't come as a surprise that my slutty cousin Kristen would find a way to worm her way in on the action as well.

Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa   Ma/ft   Fa/Fa   Fa/ft   True Story   Incest   Brother   Sister   Father   Daughter   Cousins   Oral Sex  

My mom had left for work by the time I got up so it was just me to get myself breakfast. Slipping on one of my many T-shirts, I made my way to the kitchen and had some cereal. For the rest of the morning the only interruption I had was when the doorbell rang as the UPS guy was delivering something for my dad. It was our “usual” guy so it wasn’t the first time he saw me in just a T-shirt but I still liked the way he looked me up and down. There was none of this “fucking the delivery guy” you see in the porn movies though, just some innocent flirting and then he was gone. Too bad, really. He was quite a hunk and I loved the shorts he wore!

It was tempting to call Rick to be sure everything was on for this afternoon. The only reason I didn’t was I assumed that if anything WAS wrong that he would have called and by calling them, his mom might answer the phone and wonder why I was calling ... My Aunt already thought I was a slut and barely tolerated me as it was when we visited. I didn’t want her to get any ideas when the hope was she would be leaving the house for a few hours this afternoon.

As I got ready to leave, out of habit I reached for my bikini drawer before I stopped and slapped myself playfully. Stupid me, I wouldn’t be needing one today! Instead, I just threw on some shorts under my T-shirt and pulled my hair back in a ponytail and left for my cousin’s house. Surprisingly, either Kristen was late or she had been dropped off because my car was the only one in the driveway. Kristen being late by itself wasn’t the surprise. My mom claimed she would be late for her funeral someday. It was just she was rarely late for something like this and if anything, I figured she would be early to try and get a piece of Rick before I arrived.

As it turned out, Kristen HAD arrived before me but just by a couple of minutes. When I walked in through the side door into the kitchen, she was standing there around the bar along with my two cousins.

“Hey Kelly!” my little cousin Tammy squealed as I came in through the door. She ran up to hug me and wrapped her arms around me. She was such a cutie! Actually, she looked a lot like me at her age, skinny and rather flat-chested, especially compared to most of the girls in her class. Who knows, maybe that was why we seemed to relate so well with other.

“Look who’s here,” she said excitedly, “Kristen came over today too!”

I looked at Rick with a questioning expression. If he had told Tammy what he was SUPPOSED to have told her, then why did she seem to be so surprised Kristen was there? Rick looked rather sheepish and I knew in that moment he hadn’t said a word to her about anything. Gee whiz, what a jerk! Well, we would just have to play it by ear now.

“You just missed Mom and Kate,” Tammy continued. She could be a little chatterbox when she got going and it seemed to make her totally oblivious to the signals going between me and her brother. “Kate has dance practice and Mom went to watch their new routine. They should be back in a couple of hours though.”

Everyone looked at me at that moment as if by being the oldest I was supposed to be in charge or something, even if it wasn’t my house. Well, it wasn’t like we had all day so I decided just to get down to it.

“Want to go swimming?” I asked everyone. Of course Tammy was the only one who didn’t know what our REAL plans were for the day.

“Cool, let me get my suit on,” Tammy said as she started to head to her room. I looked around for some support and Kristen finally stepped in just in time.

“Well, since Kelly and I didn’t bring one, why don’t we just skinny dip?”

Tammy looked a bit surprised but quickly adapted to the situation. It wasn’t like we’d never done it before. Although we didn’t have sex together in the past, there had been a few times when we would all slip out of our suits just to be naughty so just swimming nude together wasn’t exactly something new for her. We all headed out to the pool and quickly stripped down. Rick must have been in heaven being the only guy with three girls quickly becoming naked all around him. The reason I thought so was in plain sight once he dropped his pants.

“Oh Rick!” Tammy giggled.

Tammy didn’t say anything else but she seemed to blush a bit at seeing her brother’s erection out in plain sight of the three of us. She was only fourteen so it wasn’t like she was accustomed to seeing a guy just standing around with an erection, even if it was her brother. Suddenly it was if we all forgot about the pool as we stood in a little circle, four cousins standing around naked looking at each other waiting for one of us to make the first move. It didn’t surprise me in the least to see who broke the ice.

“Wow Tammy! Looks like your brother likes seeing us this way,” Kristen giggled, “Now, just what do you think should we do about it?”

Tammy looked just a little confused. She glanced at me and I was sure she understood what Kristen was alluding to but it was if she wasn’t quite ready when it came to actually DOING it. It wasn’t like she’d never sucked her brother’s cock before, obviously, but I doubted she’d ever been in this type of a situation before where it was more than just me watching. For a fourteen year- old, it was probably a bit intimidating, especially knowing Kristen’ reputation - and who in town didn’t?

“Now quite teasing her, Kristen,” I chastised her, “Why don’t YOU just suck him off and get it over with?”

I motioned for Tammy to come over by me and I had her sit on a chaise lounge chair next to me as Kristen needed no further encouragement to go to work on her well-hung cousin. She might complain about him over the phone to me, but I couldn’t help but smile at how quickly she put all that aside when his cock was within reach! Actually, this was as new for me as it was for Tammy, at least in terms of actually seeing Kristen blow Rick. Of course I knew he had been fucking her for the past few months but I’d never done him together with her.

Kristen was squatting down with her face level with Rick’s crotch. She was probably squatting rather than kneeling to avoid burning her knees on the hot concrete by the pool edge. Watching her, it was a rather classic pose and I wished that I had brought a camera as Kristen had once suggested. I was sure a shot of her taking on his cock would’ve been a great addition to most anyone’s porn portfolio - especially my dad’s although I bet her mom would have loved it just as much. Kristen had one hand around the base of Rick’s hard dick, the other between her own legs fondling her clit, and her mouth around his cock, sucking him as her head slowly bobbed up and down on his wet dick.

“So what do you think Tammy,” I asked as I put my arm around her nude little body.

Tammy was sitting up tight next to me and her cute little nude body felt warm and soft against mine. At first it was if she didn’t know what to say as she just stared at her cousin while she blew her brother. If course she’d seen me suck Rick’s dick before, but I didn’t think she had seen Kristen doing it until now (and neither had I). For that matter, other than me I suppose she had not seen ANY other girl sucking off her brother except for maybe herself in a mirror.

“You know Kelly, I didn’t know she and Rick were doing it,” she finally whispered to me, as if she was afraid they might hear her.

“Oh really? Is that OK with you?”

“Well of course - I mean, I know he does other girls and after all, he does you too. I just didn’t know he did Kristen as well.” Then she leaned up to my ear and whispered in a more conspiratorial tone, “She’s such a slut you know!”

I couldn’t help but grin at her last comment. There was no need to whisper actually, Kristen would’ve probably taken her words more as a compliment than anything although I doubt that’s how Tammy intended them. She didn’t sound upset or anything, just more of a statement than anything. I tried to pry a little more.

“Do you mind it when he does other girls?”

“Why should I?” she answered a little sharply, as if I shouldn’t have even asked the question. “Good grief, he’s my brother Kelly! I’m not dating him you know.”

I remembered then how obstinate she had been about letting him fuck her before she lost her virginity. There was something in her tone that made me wonder if she really enjoyed sex with her brother or just tolerated it? Hmmm, maybe she just did him so she could do his friends without having to get involved with them? I decided to pry some more.

“Ok ... then tell me something ... does it turn you on watching Kristen suck his cock?”

Tammy hesitated a moment before answering but she just shrugged and said, “Well ... sorta - I guess. She IS pretty good at it - almost as good as you.”

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