_Fiance and Fiance’s sister [MF][Cheating]

Please save the usual hate for cheating people. It will be summarily ignored anyway. It is just sex, not homicide. With that out of the way:

For those, who haven’t read my other submissions on the topic. A while back I stayed with my fiance’s little sister, Mary, during a work trip. While drunk we started an affair, that lasted for the time I spent there. We agreed not to tell anyone.

However she came to visit her family, that live here, in the same town my fiance and I reside in. We never discussed what we would do, if we saw again. As no one else could make the two hour drive to the airport to pick Mary up, I went to pick her up alone. Which was fortunate as I thought we could talk things out, at least to a degree. Despite that we ended up fucking in my car in a secluded piece of wood on the way back. Following that we talked a little about us and where this all was going and we agreed it was just very great sex, but without emotional attachment.

We didn’t see each other alone after that, as someone of her family was pretty much always with me, her or both of us. And neither one of us has any interest in blowing up her family my relationship. Kathy however took perverse pleasure in teasing me, when she knew I was in earshot, by telling my fiance tidbits of the times I had fucked her, under the guise of talking about a new guy she was seeing, back home, where she lived.

However I had sex with both my fiance, Kathy, and her sister in the span of a few hours. Not at the same time of course, this is not some damn porn fantasy, or maybe it is. This whole thing is certainly starting to sound like one.

I woke up with pulled down boxers and Kathy sucking on my morning wood. Mary hates sucking cock, but Kathy doesn’t and I can feel that difference. Kathy is much more energetic and actively tries to take as much of my cock as possible. So the way I felt, when I woke up made me moan on the spot. I lay there and enjoyed Kathy jerking and sucking me as long as I could, before I needed a pause.

I told her to stop and put her on her back. I tore away her shorts and panties and started to play with her clit, pussy and rear until she was whimpering in pleasure and telling me to fuck her already. So I got in position and we lay there sideways and I fucked her as vigorously as I could, while I kept rubbing her clit and playing with her tits and ass. We switched positions twice when she orgasmed, to cowgirl and reverse cowgirl. Through all of it I kept rubbing her clit and fingering her ass. She moaned and whimpered in pleasure, while being fucked like that. After that I was at my limit. I pulled my cock out of Kathy and knelt on the bed. Kathy turned around and blew my till I shot my load in her mouth. She knows I like when she swallows and she did.

Afterwards we were lying in bed and I asked what had brought that on. She told me something had come up at work and she couldn’t spend the day with her sister as planned. So she asked me to maybe take her to lunch or something as I was between work projects. It would be the first time I was alone with Mary again and agreed. Kathy washed up and went to and I called Mary, telling her the news.

Mary asked me, if I was up for some fun. I said I wasn’t sure, if I was up for that kind of fun, as I had just had sex with her big sister. What Mary said next actually kind of shocked me, but I went along with anyway. But I’ll come to that further down.

As I mentioned in another place, I am an Archaeologist, and when I picked her up Mary asked me to see my work place. It is just another office stuffed with books, research and some antique finds, but it isn’t very interesting, but many people imagine the most interesting things. Anyhow I took Mary to my office, which luckily was secluded. The moment we entered my office Mary locked the door.

She pushed me back onto my chair and made a show of taking of her blouse and skirt. Then she opened my shirt and pulled my pants down. When we had spoken on the phone, she had asked me to not wash my cock, so she could taste it after fucking her sister. Despite her not liking to give head, she really got into it this time. The thought of her sucking my fiance’s dried juices of my cock made me hard, despite me having recently had sex.

After that Mary got up and remover her panties. Standing in front of me in her bra, stockings and heels I got even harder, if possible. She sat down on my lap and tried to guide me cock into her. But I decided to take some revenge for all the teasing, she inflicted on my, by mentioning the sex we have had to her sister, although under the guise of being with another man. I had my cock slide along her entrance and reached around rubbing her clit from behind.

She had been wet before, probably because of the thought of tasting her big sister on my dick. I kept teasing her like that until she practically begged me to do her. Temptation was to great at that point and I fucked her, ramming into her hard. I was near my limited already, seeing as that morning I had fucked Kathy.

I pulled Mary of my cock and pushed her onto the table. I like to make my partner’s to cum once at least. It is a matter of pride. So because my stamina was not enough, I fingered her to an orgasm and she stood there shuddering and enjoying herself in the middle of my office.

Me shooting my load into Mary, had become kind of a tradition. So I started to fuck her doggystyle on my desk. I told her I was close and just like the times before she urged me finish inside. And I did shoot my load deep into her.

We cleaned up and went to lunch as Kathy had suggested.

Source: reddit.com/r/gonewildstories/comments/9jphd7/fiance_and_fiances_sister_mfcheating