Most Helpful Girl
Shit. That must've hurt. I'm sorry man. The best thing to do is beat the shit out of her. Just kidding. I would've. Anyway, the best thing to do is to just cut her out of your life. I know it's easier said than done, but she's nothing special. You deserve better. Please don't let this ruin you or get to you.
Most Helpful Guy
Well you do what you feel like doing only safely. Want to punch something buy a punching bag. Want to break something get some foamcore boards or cardboard and go to town. Heart break is hard to deal with and it sounds like she is just using you as a freind which often happens sadly. She might care for you a bit but would much rather get off with an ass than someone who cares for her.