Backstory, my gf (now ex) Katie and I go on a trip to Vegas with her best friend Michelle and her boyfriend. We are all broke college kids at the time and decided to share a room to save money. Both Katie and Michelle are very attractive, petite with very athletic bodies. They have been friends for years, way before Katie and I started dating. So we had been in Vegas a couple days, nothing out of the ordinary had happened just the usual gambling, drinking and spending time at the pool.
It was the third night where things got more fun, we had been out all day and had gotten in bed ready to pass out, then right before I pass out, I hear soft moaning coming from the other bed. Katie and I look at each other and laugh, it gets louder and now we can definitely tell they are fucking. I’m definitely getting turned on at this point, wasn’t sure if Katie was feeling the same until I feel her hand slide into my shorts and grab my hard cock. She kisses me as she continues to stroke me, the moaning gets louder and I get more turned on and pull Katie’s shirt off and take her nipples into my mouth and she lets out a moan. I notice Michelle and her boyfriend had paused, noticing what was going on and the boyfriend and I make eye contact and acknowledge what’s happening and without a word, both go back to our girls.
Michelle is now bent over and I can hear her getting pounded, I pull Katie on top of me grabbing her ass telling her to suck on my cock. She takes me in her mouth as I watch Michelle’s tight body arching as she takes a pounding. I couldn’t take it much longer, I flipped Katie over, bringing her legs to my shoulders as I slid into her. Fucking her harder and deeper with each thrust, she was clearly turned on, it didn’t take long before I felt her whole body tighten as she came all over my cock. I continued to fuck her through orgasm before eventually pulling out and cumming all over her chest. I hadn’t realized, but Michelle and her bf had finished and had been watching. The first words were spoke when Michelle said “that was hot”, we all laughed and eventually passed out.
The next day when on as normal, besides that no one really worried about hiding when changing clothes the next day. Great end to the trip!