Boyfriends friends ALWAYS TOUCH ME!!?

Well its only two more specifically, the first one Isaiah only just makes dumb comments about how fine my body is. The second one Brandon will constanstly whenever my boyfriend goes out of the room says how much he doesn't deserve me he would "****" me all day. A few weeks ago he slapped my butt and him and my boyfriend got into it but everything got worked out after they talked it out. Well last night we all went out for drinks and Brandon made a move again as I was going to the bathroom and pinned me against the wall and tried rippin my shirt. I kicked him in his balls and punch him and he was out of it (he was drunk). Me and my boyfriend left after that an since we've been home I haven't talked to him. I'm not trying to be mean but I KEPT TELLING HIM before any of this happened about what was happening an he wouldn't listen and after last night it got took toooooo far! I don't want to ruin our relationship cause we've been together since 07 but ughhhh. ADVICE NOW PLEASE!!!