Yep. One time with a great girl I had been dating. Her best friend joined us for dinner. She had just broken up with her boyfriend. She used to give me the eye a lot but I never thought it would go any further than that.
Anyway we go out to dinner, had too many drinks, come back and all three of us were watching TV together with me in the middle on my girlfriend's bed.
So I'm thinking to myself, hmmm, this could get interesting tonight.
My girlfriend fell asleep. Lisa and I looked at each other and just started giggling together. I think we both had the same lusty thoughts going.
She put her hand on my leg and started sliding it upwards and I got totally turned on. She then went in for a deep tongue kiss which was the last move I was expecting.
So here I am with my girlfriend's best friend ready to jump my bones while my girlfriend is sound asleep one foot away.
Then she climbed on top of me and just started pressing her body against me.
I said to myself this is so not the right thing to do, but I have to admit she took me past the "fail safe" point and I couldn't stop myself from responding back.
We ended up rolling on the bed and onto the floor and . . . then we ended up falling asleep after on the floor.
My girlfriend woke us up later and said how'd you both fall off the bed?
Actually I guess this doesn't qualify to be a threesome but it was a 2 out of 3 some.