Anyway, we went back to our place after a few (quite a few) more and that's where things got interesting. She was quite shy but things got heated and we ended up rubbing eachother while my girlfriend watched. I got so turned on feeling her soft, small breasts and watching her cock grow larger and larger. Eventually I asked if she wanted me to fuck her which she eagerly agreed to.
My girlfriend sat in a chair as she watch me lay her on her back and spread her ass, licking it lightly at first and then harder. She let out a soft moan as I slid my dick into her tight ass, my gf watching the whole time.
It was a great experience, and I think everyone came, well I know two of us did :P
Here is a pick from earlier, she was very shy and we didn't push the matter, sorry if it isn't that clear but we were all pretty tipsy. I'm behind obviously :)