rear ended pics to come

[supmet]

Well, you're already screwed, since you left the scene of an accident causing more than 500(or is it 750) dollars in damage, and you didn't contact the police or insurance. Provided the dude didn't give you fake information, and actually pays it, you still need to take it to a mechanic and get the entire frame, motor mounts, suspension, and everything in the car checked out. There's a pretty good chance there is more than just cosmetic damage.

I'd call the insurance company soon. You might be out of luck already, but the longer you wait the worse its gonna be.