What should i do about my ex, It's like a war :o

Me and this boy went out and we broke up I asked him if he felt the same and he said he did. But I found out he still fancies me by his best friend which is in my form. and now he's going around telling people things which arnt true about me at school. So I told the biggest gossipy girls in our year his biggest secret.
So he started doing worse and it's like a war now. But the thing is he's still flirting with me and trying to get my attention all the time, I just ignore him or tell him to go away (not so nicely). He's so weird he says he feels the same about breaking up then does all this. I just want to move on and forget about it, i even wanted to be friends again but he wont drop it, he could'nt just move on and not say anything. What should i do?
XXX

Well, play his game?

You don't have any attachments like he does, he's still interested so just fight back harder and better. If you ever wanna stop it, just tell him "i'll have you humiliated if you don't stop" and if he doesn't. Play his game :)

Here's a hint, the easiest way to humiliating a guy is to comment on his size etc ;) Or, he's a bad kisser or make up stuff like he once peed himself idk?

Just, humiliate him if he doesn't stop?

First of all i wont even have to make anything up lol he is small :D and he can't pull his foreskin back HEHE if al the boys in our year found out they would'nt stop taking the mikey out of him, but i'll leave that to a last resort :D

cheers for all that information 8-)

Urm, well tell everyone unless he stops?
and next time, just say YEA i know tons on him...

Yeah, but i've already threatened him with that i think he does'nt think i'll do it . and i keep getting people coming up to me asking if diferent things are true, even someone in my form keeps pointing at me doing a fake laugh pointing at the boy i went out with and putting his hand over his mouth, it's so annoying.

how old are you 12?

How long were you with him for?
He's being real immature, tell him to sort it out and move on.

no im 14 almost 15 now i was 12 when i started thi account :D XXX

or turn him into a social reject, he'd regret it then.

If i was you, and i'm evil. I'd just really tell everything i know to everyone.

I went out with him for over 3 months, and I could turn him into a social reject and i know because i have a really good rep at school i could ruin his, but thing is about that he knows something really horrible about me, so far he has'nt told anyone at school but if i do do something to bad he might tell people that, No one would be horrible to me about it but i don't want people to know. :l