this gril and me were about to go out we talked and she dident want to seem like a Wh*** so we dident date right after she broke up wth your X so now my best friend new I liked her and said he dident like her now they are dateing and me and him are about to fight and I will probably kill him because when I fight I don't stop till he can't move and I will swing on teachers or what ever what should I do?

First thing you should do is learn how to control your temper and yourself or quit bragging about being so mean. You are going to learn later in life that people are not going to like you and are not going to have anything to do with you if you continue to be so out of control ----(me and him are about to fight and I will probably kill him because when I fight I don't stop till he can't move and I will swing on teachers or what ever) ---- and I am only quoting what you said.
Have you ever thought that the reason that she is going out with your friend is because she is afraid of your boisterous actions. If you were a calmer person she might be your girlfriend now.
Just trying to give you some advice that it takes some guys several disappointments to learn.

WOW! You sound like a complete moron. Maybe you should grow up a little before you try to have a relationship with anybody, and stop thinking your such a tough guy. But that's only my opinion.