This happened years ago, but it was an amazing experience.
When I was in high school, I had a FWB for a while. She was thick (but not fat) and mixed black/white. We occasionally hooked up in secrecy after school, but had different friends/interests, so never interacted much in school itself. Cut to the point, one day after hooking up, we talked about things we’ve wanted to try.She mentioned having a threesome, both with another girl and another guy. I said the girl one sounded more fun, but ultimately she said she was down to try with another girl if we did one with a guy first. I thought it over that night, and ultimately agreed to a MFM.
We had made a post on Craigslist at the time, and finally found someone we agreed on (we were both barely 18, and finding someone our age was harder than anticipated). The other guy went to a different school, so we didn’t have to worry about someone else at our school finding out or anything. He was skinny, white and had a pretty big dick. We picked a day to meet and all met up at my house after school one day. I could tell she was nervous, but also excited, and so was I.