Sad fact, you can't make people love, want, respect, need you no matter how hard you fight.
I understand fighting, I am a fighter myself, but I have to pick my battles.
I was well into my thirties when I put up the fight of my life for a man, I literally wasted 3 years, lost my war and didn't even have battle victory under my belt.
I really wished I had moved on and, gotten myself together and found happiness elsewhere.
3 years gone, Poof. As young as you are you shouldn't pine over someone who obviously does not want a romantic relationship with you. Get up, get out, have fun and try to forget about her, and for Pete's sake keep your fingers off the "send" button.

Haha will do. Last question. When she calls or texts, what do? And what about my twitter and Facebook, do I just be who I am regardless of what she will see?

Unfriend her on FB. Do total No Contact. If she calls or texts, let it go to voice mail and then delete without listening to it. Or block her calls if you can. Like, you know, be serious about this...