How to get this girl off my boyfriend?

my supposed to be friend is in love with my boyfriend and she knows that I dont like because another friend told her that I get pi**ed off really bad and easily when she flirts with him and im around and he tells her to stop before I attack her but she doesnt and I even told her that she pissed me off and to leave him alone but she doesnt get and get this she EMO what do I do about her to get her off my boyfriend?

tell her off or get someone really buff to tell her to lay off, seriously. I'd be pissed too if I was in your situation. Or get your boyfriend to say to your friend "LISTEN, I DON'T LIKE YOU QUIT BOTHERING ME" or whatever so that she knows he doesnt want her.