HELP ME PLEASE!

Okay so long story short. My "best friend" and I got into a huuuge fight. I guess you could say that she's now my ex-best friend. Now she's talking crap and lies about me behind my back. I think she told the guy I'm crushing that I like him and now he won't talk or even look at me. She's making me feel depressed and ruining my life. She's being a total [3*tch and I didn't do anything to her.

Does anyone know any good songs about back-stabbing friends?