What are you supposed to talk to girls about?

im 13 and in the 8th grade. i never really learned how to interact with them like most of my peers did for some reason. pretty much EVERY SINGLE TIME i've tried to have a conversation or flirt with a girl it was a disaster. like i seem to have nothing in common with them. i dont listen to the same music as them, watch the same TV shows as them, or partake in any of the same activities as them. i live in southern M. and most of the people in my school are guido wannabes and preps. im the kid that wears all black, wears a chain on his pants, and listens to death metal. that might have something to do with it. sure, there are a handful of girls that are sort of like me but different in the way that they are deadbeat potheads. i want nothing to do with that. What am I to do?