Fuck escalation at party

I get what I want, my girlfriend was celebrating her bachelor party on Friday, we had a pre-bachelorette party with a pair of girls at her place before we went on tour... When we were about to leave I saw that her fiancé had just gone into the bath. So I quickly followed him... The girls were standing in the hallway and I grabbed her fiancé's cock, it wasn't the last time that evening!