take up nasty habits.
don't shower, pick your nose in front of her, dip, smoke cigs, rip ass, be casually racist, blame your problems on "the fucking jews," watch violent guy movies when she is around, talk about yourself nonstop, lie about your accomplishments and brag constantly. that should get rid of her. oh and if you see an ugly or fat chick say "holy shit that girl is a fucking hog" or something to that effect. oh and ask her for money occasionally.