One of my fantasies was the whole "two girls at the same time" thing (yeah, I know, typical male...so sue me *grin*). I had been dating this one girl for about a week when she invited me over to her friend's dorm room to watch a movie. We went over there and I found this girl to be absolutely smokin' hot. We started talking for awhile and I found out that my girl had been ocassional lovers with this girl. This of course got my brain going.
My girlfriend said "Is it ok if she and I have our way with you together?" Let's just say they didn't have to twist my arm
Very awesome to have my fantasy turn into a reality. Though, I kinda felt guilty later when I found out her friend had turned 18 just a month before (I was 25 at the time).