Last week during christmas eve i attend a dinner at my friend's place at BU, during the middle of the dinner i had to leave to pick up another friend and return to BU again after my dinner.. when i went home i notice that my back bumper crack and i didn't bother.. few days later i recieve a letter from the police saying i knock someone's car.. so today i went with my dad to check on the fella's car true enough he stays very near the place i park... i'm not saying that i didn't bang him.. i might have without knowing it.. just one of those days i guess.. i just wondering now what should i do, i know it seems to be my fault as i didn't make a police report.. any advice dudes?