So I've been hanging out with this girl for a while. Last week, I told her that I liked her but she said she just wants to be friends. She is a cool girl so I was like okay, better having her as a friend than not at all. Fast forward to today, she is in my roommate's room getting busy ... I shouldn't be, but i'm feeling jealous and now i can't sleep. I can't be mad at my roommate, he doesn't know that i like her, but i'm really p/o'ed at this girl now. I'm thinking of cutting her off, cuz this is making me feel miserable. anyway, what should i do??