Whats the name of this movie?

Whats the name of this movie i forgot whats its called. Its about 4 years old and its a fighting movie its about a (17-19) guy who wants to learn how to fight so he joins a fighting club. There was a scene where he was mad and there where people in a hummer and the got him mad. The all got out of the car and he beat up everyone of them. His best freind video taped it n got alot of hits on youtube. He gets a girl n the ex of the girl hates him n at the end of the movie the fight but the next day they saw each other n smiled at each other showing that they are now freinds. PleAse i want to see this movie