Friend problems!?

well i have this friend and shes a girl and we've been talkin 4 bout a few months and my friend tol me that she likes me. personally i didnt care but i began to notice she would really nag at me, she'd grab my arm to make it look like we wer goin out try to hug me or even try to force me into romantic scenarios (once i was with my bffs and it was raining and she dragged me into the rain and talked bout nothing that had to do with anything) she claims shes emo but to tell you honestly shes the preppiest person i know shes all boys and shopping and all that stuff. shes driving me wacko like yesterday she said "your a boy, right? i responded "no, im a girl (sarcasm)" "no serisouly!" she yellled and i said "well, ya i am" and then she said "well... prove it!" then i turned around and walked the other way. i dont know how to get rid of her ive tried being mean but my friends say im still being nice and i have 2 b more mean... they also say she lives being treated like crap? plz help!