i was in a similar situation once, it was a fender bender, i got out calmly apologized, said my insurance would pay for it, i was calm so he calmed down and in the end,no punches were thrown no one called the cops, no heated arguments we decided it ain't worth a trouble standing there in traffic for the cops to show up and called it a night and went our seperate ways, and i had a girl with me, the lesson here learned is
don't be an ******* punkass *****, don't try to impress the girl by being a smartass, dont try to hit and run, just don't be stupid, cos it will come back and bite u in the ass, in other words act like a grown up learn from my experience.