This girl.., my boyfriend ex Options

[Fatality]

Alright. This girl named, let's call her Jamie, still has a very large crush on her ex who is my boyfriend. She also has a boyfriend whom she has cheated on 3 or more times but continuously tells him.."I Love You.." which is crap because she doesn't. She willingly admits to my boyfriend she still has feelings for him and that he is better than her current boyfriend. I confronted her on this. I;m a 5'6 "goth" girl who has broken 6 kids nose at my current school. She know's this. She's afraid. She lies. Well, Today I find out she's telling everyone the "details" about her relationship with my boyfriend. I'm not happy..

Instead of me getting suspended again..
What should I do?

I've tried the "tell her boyfriend she cheated" thing.
He believed her.
I've fought with her in the hall.
Got in trouble.
I slammed her face into a locker,
BUT only after she drug her nails over my face..

What can I do without resorting to violence.

P.S.-I never start these. She's always hitting me. -.-

[Fatality]

Funny thing in this case.
My boyfriend hates her but he won't tell her to her godd@mn face and it makes me angry. She threatning to press charges against me now. I supposidly invaded her privacy. I even had to talk to the lovely officee in the office who loves me. She got in more trouble with that, but still possible charges.

And I can't even beat her @ss after school. She can take it back to school because the argument/fight started there verbally and went to a higher level somewhere else.

I told her off today.
She cried.
But she still doesn't get the point.
I'm getting slightly fed up with her ridiculous-self-centered-b!tchyness

But, yeah. My boyfriend hates her. She hates me. But likes him. Sooo. It's quite an odd day..everyday.