I (M, 29) am hooking up with a guy (M, 24). We're not necessarily official, but he doesn't like that we're hooking up while I'm dating my girlfriend. I try to tell him that she doesn't care or think it counts because he's gay and I'm not, but he doesn't really listen to me.

About two months ago, I introduced him to this guy (M, 26) I'm in a band with. I found out last night that they'd been hooking up this entire time while he's hooking up with me. I'm really livid, because I thought we had something special. I mean, I let him smoke my weed, and I let him sleep over at my girlfriend's place when she's not home because his place has roaches.

I plan on getting our friend and him to go with me to my place and not tell either of them they'll be there. I'm also bringing our mutual friend (M, 33) who's taking my side and introduced the guy in my band to me in the first place. I'm gonna confront him for cheating on me, but I want to know if I'm in the wrong for doing this, or if I should just let him do what he wants?

Thanks