roommate's girlfriend...

[josh8o]

ok i have a problem...i moved into a different suite at the start of this semester and my new roommate is really nice, and he has a girlfriend. she is the most anoying person in the world. she is so not even close to cute, and all my friends are like why is he with her? anyway, it seems that she purposely goes out of her way to bug the hell out of me. i can't stand her. when my roommate is at class or just not here she often just comes over and hangs out. i dont have a problem with her being in the suite, but when she is just hanging out in our room alone and i come home from class i want her gone. i feel like i have to be nice to her because she is my roommate's girlfriend. tonight my roommate went home and i came back from a meeting at the house to see that she had been in the room, she even has her away message on hig computer right now. i don't know what to do. i am about to tell her not to come in here if he isn't here, but i don't want to piss him off since we have to live together until the end of may. WHAT SHOULD I DO?