After almost 7 years I’ve finally had sex with my high school crush [MF]

So this happened maybe a month ago and I just keep thinking about it and I have to share it. So the whole situation is that she is staying with my fiancée and I. Seems like an odd setup but she, who we will call K for the rest of the story, recently went through a breakup and ended up without a place to stay. She is a very close friend with my fiancée. They have known each other for their whole lives and I have known her for years and went to high school together with her. That’s where I had a huge crush on her but never got the chance to date her. Still we became good friends and have continued being good friends since we graduated. Anyway K had been staying with us for about month and the whole time she had been there I will admit I still had a huge crush on her still and my fiancée knew it. We all were super comfortable with each other.

I[M] “Cheating” on my Fiancee with our [F]riend.

So I am going to start this off with a little preface on my fiancee and I’s relationship. We both are in our early to mid 20’s and have what we call a “semi open relationship” if that is a thing. Basically means that we can pursue sex with anyone as long as the we both agree on that person. Not just a free for all. Anyway thats important to the story as we keep that to ourselves. For this story I will be F and my fiancee will be M. The friend will be D Anyway storytime…

Cut back a couple of weeks and my fiancee and I were having a couple of friends over for a dinner. We do this every few weeks just for fun. Some friends come over and we like to dress up nice, you know suits and dresses, just for fun and have a nice dinner. Everyone started arriving and a we were all gathered in the kitchen and thats when D walked through the door. She walked in with a skin tight red dress, high heels, and cherry ready lipstick. All underneath her beautiful brunette hair tied up into a clean and tidy bun. She looked gorgeous and I couldn’t help but to stare a little bit as she walked into the kitchen. The dress hugging her tight curves. I was struck by her and my fiancee to notice. Nudging me and looking at me. She knew exactly what I was thinking. She know I found D beautiful.