She used to like me. She rubbed my leg and constantly asked for hugs (Of course I didn't give her any she's creepy as fuck). She used to ask me if i wanted to come to her house at like 9 at night. Thank god the school is switching my lunch periods.

 She broke up with her boyfriend, got a new boyfriend, invited her old boyfriend and maked out with him. So she was cheating on her current boyfriend.

She broke up with her current boyfriend to get backw ith her old boyfriend. Thats what I told her to do so that she wouldn't be cheating on anyone.

Now she annoys me, she says shit like she can beat me up and she can her boyfriend (Shes only like 120 pounds and weak as fuck, her boyfriend is a huge nerd pussy and shes dead serious about her beating me up). I'm trying to tell her that she shouldn't just jump to stupid conclusions and that just because I'm nice doesn't mean I let people take advantage of me. Whatever anyways ill continue...

She gets annoying because she says smartness is the only reason to like a guy and I know that's bullshit. And ughhh how do I get this creepy skinny scary women to stay away from me?

Make a forum thread demanding an apologie from her.

Acting nice to a person like that isn't going to help at all toast. I recommend being as blunt as possible man.

Do her. That will  definitely make you get rid of her.

Or contract some mooks to beat her up and hide her body.

she wants to fuck- so you should- unless shes a beast

Tell her you love her and you are ready for a serious relationship. Be careful though, this one may backfire on you, and if it does, you are screwed.

Don't be nice to people that you don't like, that's a good way to keep them away. Tell her to her face that she is creepy and weird and that you think she smells like armpit, or wet asshole or something like that.

Word of advice, nice guys finish last. If you're a nice person, assholes, dickheads and douche bags will walk all over you. Only be nice to people that are deserving.

This is good:

First off, at lunch start eating with your mouth open. Then later say many rude comments and call her fat. If she calls her boyfriend, say she's cheating on him with another woman. Unite with said boyfriend to stop her and tell her you're both gay. She will get mad and leave, and then tell the boyfriend you aren't really gay so he can stop rubbing your arm.