Fun With SIL

My ex wife's sister in law or my brother in law’s current wife and I have been hooking up since I was married. I was married at 24 and divorced at 28. I first fucked Kathryn or Kat the year before my divorce. My BIL is kind of a loser who can’t keep a job and my ex convinced me to let them stay with us for a while. Kat is 34 long straw berry blond hair. Tiny waist plump ass and I didn’t think she had big tits until the first night they stayed with us. Kat had always worn leggings shorts and loose shirts. The first night we were in the living room watching tv and she came down from upstairs in some really revealing shorts and a spaghetti star tank top no bra. Her tits looked really good and as if they were going to fall out. For the first week it was awkward I do IT and works from home. My ex worked at a hospital and had gotten my BIL a job there as a janitor. Kat worked part time at a mom and pop coffee shop it was 2-3 days a week so she didn’t make anything significant but it helped out so she did it. I was at my desk and was working on a project when Kat walked in and asked me how I was. I asked her how her morning went and if she wanted anything to eat or drink. Thanked me and said she was starving. I was hungry as well so I made us some sandwiches. We talked and she said that she had never had any one make or even offer to make her food specifically her husband. I told her some of us are just different. Crime then on we would spend a lot of time together and talk. Talk turned to flirting flirtatious behavior turned to physical contact. I was missing my stress ball one day while sitting at my desk and Kat was with me and she saw I was looking for something. I told her my stress ball I always squeezed it when I got busy. She had on a skirt and a skimpy tight v neck shirt showing lots of tit. I jokingly said damn Kat I should just use one of your tits and laughed. She smirked and looked at me and pulled her tit out. Then put it away and took her top off. I had my hands on both tits and was squeezing her tits and rolling her nipples with my finger and thumb. She likes this because a few rolls into it I saw her legs open. I saw that it was only a little after noon and we would be home alone until close to 6. I spent some time eating and running her. We moved into the living area and we went down on each other. I had our window blinds open so we could look outside and we proceeded to fuck right there. I let the old mailman take a good look at Kat while she rode me reverse cowgirl. Her tits bouncing around everywhere. Weekends where tough but we where able to sneak in a fuck or 2 but during the week it was on. I even had her quit her part time job so she could spend more time with me. I’d just give her some cash and it was such a small amount she was bringing home from the job that it was easy to cough up. Plus I felt it was well worth getting to use her anyway I wanted. She wheat from slutty clothing to walking around in her thong and Tube tank top. She would of walked around naked if o wanted but you should see what she looks like in that outfit. She was well used and well fucked. They moved out about 8 months later and we continue to have the same schedule.

At one point the mailman thought Kat was my wife because the amount of time she spent with me. My ex and I finally split. We where more roommates then a couple and that got old for both of us. We sold the house and I bought another one closer to mid town. Kat and my BIL all of a sudden stated to have problems and split up as well. She moved out and stayed at (her parents) aka my place. So know I live in a nicer neighborhood seem to have more money in my accounts and have my ex SIL with me doing things for me that I never knew a women would do. I’m talking so really extreme porn type shit. She has really told me all the shit that my ex BIL was into and Kat is a little sub so I can see. I told her that I would not ask her to do anything weird I do not share so her ass mouth and pussy belong to me she said that she could or would ask her BF who is hot to put on a show for me and she would join. I told her that I may take her up on that. For now she is living with me and I’m putting that body to use. It’s a matter of time before ex and BIL find out but we dog care. We have very little family and we don’t see them around anymore. Kat’s willingness to be a total fuck slut makes me wonder what exactly she has done. I’d like to know the more I think about it the harder I get. Il ask her to confess on here and she could let us all know. She knows I found this site. She will read this as well.