I married into the weirdest family.

I got married about 3 years ago to my husband (calling him Tom). He is a great guy and we are very happy. Tom has two brothers calling them Tim and Terry, and only his dad is around. His mom passed away many years ago. Tom's been (Calling him Ben) is about 63 6'1, muscular and a handsome guy.

Tom's brothers are both married, Tim is married to this cute strawberry blonde (Jess) and terry is married to the a really sultry Brunette (Stacy). Nothing really weird there, they have been married 5-7 years. When I was dating nothing was every weird. The brothers were close, and close to their dad who lives in a large home towards the country. Things started getting crazy late last year.

We were visiting Ben's house and staying over a long weekend. We'd been having a couple of drinks and cooking out by the pull. Stacy had been acting a little weird, kinda gittery in her seat. I chalked it up to the drinks and went on with having some fun. A half an hour passed and I looked around and Stacy was gone. I went to go try and find her.

I started wondering around the house, towards the back of the home on the first floor been has a library, I don't know why but I started there. It was the surprise of my life. When I got close to the door I thought I heard clapping. When I opened it I realized that it wasn't really clapping. When I opened the door, the first thing I was was Ben's naked ass, and then Stacy's bare ass.

Ben has this really large leather arm chair. Stacy was facing away from the door with her face buried in the back of the chair. Ben was pumping away into her. Stacy has a larger but, wide hips from having a couple of kids, but her Breasts are on the smaller side. With her big butt and Ben's stokes her ass would slap up against him and make the clapping sounds I was hearing. I couldn't believe myself. There was my father in-law and sister in-law having sex. Good sex from the looks of it. Stacy had her head buried in the back of the chair, it was muffled but you could hear her grunts every time Ben bottomed out. It was obvious why. He had a very nice cock. It wasn't the longest I have ever seen but very thick. He had the largest pair of balls I have ever seen, it was amazing.

Shortly after I entered the room, Ben looked over at me, smiled and waved. With the same hand he waved, he swung down and smacked Stacy's ass really hard. I just heard her moan. He grabbed he by the hair and really started pounding her. In between her grunts, she kept moaning "Yes daddy" Ben asked her if she was daddy's little slut. I couldn't believe what I heard. Stacy answered "Yes I'm daddy's good little slut." A few minutes latter Stacy stuffed her head back into the chair, I heard her moan, and saw her whole body shudder. Ben kept pounding away, and soon after I heard him grunt, go as deep as he could and empty his huge balls of cum into Stacy's pussy. I just stepped back out of the room and found my way back out to the patio.

I couldn't believe what I saw. Stacy walked out 10 minutes latter, looking flushed, but happy. She had her bikini bottoms back on, but I could already see the cum dripping down the sides of her legs. She jumped in the pool. 5 Minutes latter Ben came out.

Rest of the time we were out there I couldn't stop thinking about what I saw. Ben talked and acted like nothing had happened, as if I hadn't seen anything. After dinner me and Stacy were doing the dishes while everyone else was watching a movie. I couldn't take it and I confronted her. At first she was shocked and acted like she didn't know what I was talking about. Once I promised I wouldn't say anything to anyone she told me what had happened.

She told me that when she had first gotten engaged to Terry, they had spent a weekend out here drinking. Terry had gone to bed early and she had stayed out drinking with Tim and Jess. She had gotten pretty buzzed and when she went to go to bed, she mistook the room and went into Ben's bedroom. She had been feeling pretty horny, and when she got into bed she had asked Terry to fuck her for the rest of the night. She didn't realize that it was Ben. She told me that before she knew that it wasn't Terry, Ben had already buried his cock into her.

She told me how great it had felt, that he had stretched her so good and that he fucked her for 3 hours straight, cumming inside her several times. She told me that she had the best orgasms of her life. When they finished she felt really bad, but Ben told her that it was a drunken mistake and that no one had to know and that it would be their secret. She said she tossed and turned the rest of the night, feeling guilty, but also really horny and turned on by the shock factor of it all, and that early in the morning while Terry went for his run, she went back to Ben's bedroom and sucked his cock, letting him cum in her mouth.

She said that after that she was hooked, and couldn't stop. Since then she had made it a regular thing, she comes by every Tuesday once Terry goes to work and spends the afternoon having Sex with Ben. She says she is not a hundred percent sure that her daughter is really Terry's, and that the longest time that her and Ben haven't had sex is the two months while her and Terry tried to get pregnant and that right after she was they went back to having sex. I asked her about hey way he had talked to her and what she called him and what he had called her.

So told me that it was one of his fantasies and that she had learned to enjoy the feeling of being intimidated by Ben. He had begun calling her that over the last year. She made me promise not to tell anyone what she had told me, and that she would come over next Tuesday after she had been with Ben and we could talk about it.

By the time I sat down to watch the movie, I couldn't stop thinking about what I saw and what she had told me. I couldn't stop thinking about Ben's huge balls, slapping against Stacy's pussy and all the cum. It kept up with me all the way to bed, and then when I couldn't sleep. By the time I got out of bed and walked into the hallway, my pussy was soaking wet. I walked down the hall in a trance. When I got to within 3 feet of Ben's bedroom, Stacy walked out licking her fingers. She got close to me and said that she had just sucked Ben off, but that he'd prob be ready to go in another 5 minutes if I could wait that long. She hugged me and wished me good luck.

I spent the rest of the night on my back with Ben's cock buried deep in my pussy. Over the last year, I have been having an Affair with my father-in law. I come over every Thursday and fuck him. I call him daddy and he calls me his tight little cunt. Stacy has continued her relationship with Ben. Me and her have become very close. She is 5 months pregnant with her 3rd baby. She thinks its Ben's. I'm expecting my first, I'm certain its Ben's my husband has had a vasectomy a year ago as we never wanted children. I got pregnant because Ben told me that is what a cunt is for.

The weird thing is that when I told my husband that I was pregnant and that it was his fathers, he told me that he knew about the affair, that he was ok with it, and that he had been sharing Jess with his bother for the last 3 years.