I think he likes me...and I'm a lesbian., He's practically stalking me! Options

[broken inside]

So, I'm a lesbian. There is this Junior at my school (I'm a sophomore) who sits diagonally behind me in Japanese class, first period. I'm not used to anyone liking me, no one ever has, so I'm thinking maybe I'm over reacting. Here is what he does:

- Writes all over my arms to get my attention in class.
- He was drawing apicture of ane eye and grabebd my face to see my eyes, when he looks at other people for referance her does not do that!
- He walks me to 2nd period every day, no matter what. If we don't have second, he walks me to third, on the other side of the school!
- He rubs my head alot!
- He talks to me about hentai, sex, porn, etc.
- He tells me that when he watches girls to jumping jacks in PE his penis gets so hard he can't sit down.
- My sweatshirt said "Cute but evil". He said he disagreed with one part. And that he'd let me choose.
- He told me I'm attractive.
- I keep seeing him...everywhere.
- he asked for my e-mail...and gave me his!
- I help him in class and he says "I love you".
- He wants to switch seats with the guy next to me.
- More stuff, too lazy to type.

Don't tell me to give him a chance. It's like telling a straight guy to give his gay roomate a try. No. I don't like guys...like that. It's creeping me out. Part of me is praying that I'm over reacting. Am I? Are all Juniors in high school weird or something? I'm not the kind of girl who would be liked by a junior.

I half want to ask the teacher to move away from him. I'm one of the only people in that class who knows what they are doing, so she likes me. She would move me away. But he would fail the class for sure if I didn't help him. I'd feel bad because that would be all my fault.

So...how do I get him away? I can't just say "I'm a lesbian, back off!" because I dodn't need people knowing that, and what if he doesn't even like me and I'm paranoid? How can I hint to him that it would not work? So far my only ideas are to mention the gay-straight allience, or tell him I have a bf in nevada. Any other ideas?

[elaboratedream]

that situation's always hard... if you're uncomfortable with telling people about your sexuality, I'd suggest just mentioning that you like someone (never mention the gender) that you met over the weekend or something.
use a name like... idk. Jessie or something. A name that can be for either guys or girls. ramble about this person a lot when he's around and eventually he'll get the hint that you dont like him
if you dont care if he finds out that you're a lesbian, then hint at that. I like your idea of mentioning GSA.

idk. its alwasy awkward when someone likes you and you dont like them back. just try to drop hints that you dont feel the same.