Hmm, my opinion? Leave it. Hes your mate and its not worth ruining a friendship over this, plus she'd then be long distance from you. If I was in the situation i'd probably be like you and i'd probably not listen to what i'm typing now. But maybe the best thing is to wait, if he doesn't seem interested in ehr and is not bothering then their relationship may soon end, so i'd give it a bit of time and wait. I mean lets say you did sleep with each other, she may still be madly in love with your mate and you in love with her, but then you'd never really get her love in return and be really hurt that she loves him. So jsut wait a while and see what happens
