backe into a car that was parked in my driveway

i was backing out of my driveway and i bumped into a neighbor's car that was parked into my driveway..i fixed my car with some touch up paint..his car didn't seem to be damaged but later that day he asked me for my insurance info but did not want to give me his .. i di hit him but he was in my driveway and i took a picture and had a witness..what do i do now ..thanks