[F] My first threesome w/ a friend [F] who’s obsessed w/ me

Guy I was “seeing” talked about having a threesome. I was new to girls but curious/open to it with boundaries. When thinking about who to do it with, I thought of my F friend from HS (we were all 19/20) who was not discreet about being into me. She was cute, long curly/wavy hair and a thicc/curvy body (but not fat or anything). She was also kinda quirky so I knew it’d be a gamble. I msgd her and eased into asking, getting kind of nervous. After what seemed like forever for a reply (maybe 5 minutes) she said she was down! I told her my conditions, that I was still primarily straight and she’d essentially be watching me fuck him. She was totally fine with that.

She came over one night to his place and we hung out some to make sure we all vibed. Thankfully she was cool with us seeing her naked beforehand so we knew what to expect (and so I could get more comfortable). She was very sweet and understanding, even at one point being like “I’m just here… tell me what to do” which was hot.

Long story short, him & I fucked with an audience of one. She touched herself and enjoyed the whole thing, as did I.

If enough interest, I may give the detailed version.