If your friend love to put you down what would you do?

we've been friend since 5th grade ive put up with her crap so much im not like her at all im gothic for the most point and Girly and country mixed together she is just a slutty looking girl who is preppy and is defiantly not like me she like rap it feels like her and her gma always has stuff to say bout me wheater it is my hair the way i look or somethin my friend can get guys numbers left and right while im shy and better at tlkin on the internet reather then in person and i cant flirt she always seems to give me crap and make me feel really low should i finally give up and tell her im not her friend no more or wat my friend told me that shell always b like that but not to give up on her since weve been friends so long