i really messed it up.

the other day i told my ex how i felt about him,
it's been a while since we broke up,
but i haven;t been able to get over him for some strange reason.
so i told him i loved him, out of the blue;but i wasn't meant to press enter!
and now ive just ruined everything.
i can't speak to him anymore, because i am scared.
ive been trying to avoid him in school all week!
it's becoming difficult.
how can i get over him?

The only real way i've found to get over someone is to not see them, not talk about them, and eventually you'll stop thinking about them.
It sounds bad, but keep on avoiding him and you'll be okay. Delete him from your msn, your phonebook etc. Ask your friends not to talk about him.
Admit to yourself you still like him, and try not to be inside alone cause you'll just think about him. Go out and make new friends
Rebounds don't work, they seem like they do but then you end up in a vicous circle.
In a few months, make sure your over him and then you can get back his contact stuff, that is if you still want it then :)

lol waittttttt
you dunno if you've ruined anything, could be a good thing, you didn't give him a chance to say anything about it, did you? use it to your advantage, you could either pretend it was a joke/dare or you could wait and see what he says. There's no point avoiding him or else he will know you meant it and are embarassed etcetc, you don't have to get over him if you still "love" him, ask for another chance either that or do what beccy says, delete any trace of him, don't even talk about him or to him and go out have fun

he could have got it and been like omg yes i love her too and now he's worried about why you're not talking to him :D

Fact is you're not going to get over it by thinking about it, and you're not going to get over it by making threads about it. Really there is no way you can get over it, it's all in your mind. I used to be in a similiar situation to you, about a year ago I broke up with my ex and I was crushed. I tried to get back with her but in the end it didn't work, and my feelings were still there for her.

I'm over it now, because time is the greatest healer. You'll hate it, but it's the only way.