I went to my boyfriends house for drinks and ended up getting fucked by him and his friend [MFM]

So I was dating this guy at the time, a trainer at my gym. He invited me round to his place for drinks with his mate and his mates partner/date.
I went round and we were drinking away having a good time. However my guys (Glenn’s) mate kept making eyes at me and staring. Eventually his girl got annoyed and left.

By this point I was getting quite intoxicated Me and Glenn started to get a bit handsy forgetting Glenn’s mate was still in the room. Glenn started playing with my nipples through my dress which I must say was very very short. I started to get very turned on, I reached down and grabbed Glenn’s cock over his pants and started to stroke the outline of him
Me and Glenn started to make out on the couch causing his friend to get a little fidgety he could probably see right up my tiny black dress.
I removed Glenn’s pants down to his Calvin’s and he slipped my dress right off. I had no bra on at this point and was just in a g-string. while we were making out Glenn reached round and slipped a finger into my little wet pussy and I had straddled him.
His mate had started to touch himself across the room and all of a sudden said ‘fuuuck you are soo hot do you mind if I join?’
I was a little startled as the wines had got to me and I had lost myself in the moment completely forgetting about his friend. But I looked at Glenn and he looked a little uneasy but shrugged and said up to me, I replied ‘why not?’