[MF] sister in law

This is my first post here so I’ll try to keep it short and simple. This happened 6 years ago and i somewhat regret it but it is what it is now.

First off i went to school with my sister in law she was a year behind me. I had a huge crush on her in high school but nothing ever came of it besides flirting and occasional naughty notes exchanged at school. I left for the navy after high school and when i returned home after 4 years is when i met my wife (we’ll call my wife Tina in this story). Well come to find out when i was dating my future wife she was the younger sister of my crush in high school. We’ll call my crush Beth.

After 2 years dating i got Tina pregnant and we got married a year later. After 5 year’s of marriage we decided to throw a Halloween party at our house and invited a lot of people. Beth and a guy she was dating at the time came to the party. Beth was wearing a sexy little bo peep costume and she caught my eye the moment she walked in.

As the night went on and the drunker everyone got i decided to go out back to have a cigarette. Beth showed up outside with me eventually and kept me company. She was pretty wasted and so was i. She started talking about our high school days and brought up the naughty notes we used to write each other. We were laughing about it and then she told me she wished the stuff we wrote would have happened. I was kind of in shock but i told her i did to. She came in closer to me as i was leaning up against the back of the house and she reached up and kissed me. I didn’t know how to react so i kissed her back. We were kissing for only a few seconds and then we backed off and both had that look on our face of what the hell just happened.

I took her hand and had her follow me around to the side of the house. Once there we started kissing again and it was getting hot this time. She grabbed my hand and placed it on her breast. Her breasts were huge, they always have been since high school and she wasn’t a fat girl but she was curvy just the way i like them. I eventually pulled her top down and revealed the set of tits I’ve always wanted to see and touch and kiss. She undid my pants and reached down and grabbed my cock and took it out and started stroking it. I was hard as a rock and i thought i was gonna cum with just the touch of her hand on it. She turned around and bent over leaning against the side fence and i pulled her panties and skirt down and inserted my rock hard cock deep into her as she let out a deep moan. She was loud while i was fucking her from behind so i had to use one hand to cover her mouth just in case someone else came outside to smoke, my other hand was reaching around fondling her huge breasts. I came quickly and when i did she told me not to stop and to put my load into her. The pussy felt so good so i filled her up with my cum. After i came she turned back around and dropped to her knees and started cleaning my dick off with her mouth. I never went limp after my first load and ended up shooting another load into her mouth. Unfortunately she spit it out onto the ground. We got ourselves fixed up before we went back inside and we walked in like nothing happened.

As everyone was leaving for the evening Tina and i walked Beth and her boyfriend to the car. As i gave Beth a hug she whispered in my ear thank you and it’ll be our secret. I just smiled and wondered if that was the first and last time i was going to be with her like that. Well, it wasn’t the last. We had a coupe dozen more encounters until she got married 2 years later.

Here’s the irony of the story. My wife and i ended up getting a divorce a few years later because she left me for the guy Beth took to our Halloween party. Ha ha ha. No lie… But to this day i believe Tina has no clue about her sister and myself having sex all those times. It was wild times and i still have a crush on Beth but she lives across the country in New Hampshire with her husband.

Source: reddit.com/r/gonewildstories/comments/8ioprf/mf_sister_in_law