Harrassment

Someone has been harrassing me for the past two or three days. She used to be my friend and obviously now isnt. She is a lesbian, but who says you cant be friends with lesbians if your a girl... anyways... she apparently started having a crush on me and was writting blogs about me and putting up my pics on her myspace calling me "her girl" which is not the case. I am straight 100% but when I told her to take down the pictures and the blogs because it bothered me and i wasnt gay, she went crazy. She started messaging and commenting all of my friends saying that I am a lesbian and all this other stuff. she is even crazy enough to make up some stupid love story about us saying what we have and havent done. well the truth is we havent dont anything. She was my friend. I thought we had an understanding that I am straight, but she completely threw that out the window and is talking so much shit about me. Im so pissed and im not normally a violent person but I really want to knock her out. =[ She is posting bulletins about me and everything. I dont know what to do... its a bunch of bullshit and its pissing me off..... HELP!