Dude....please please please, report it to the police and tell your insurance the other party's registration.
It would be fair enough letting it go if it was just a scuff, but the whole bumper is off
![undecided :undecided:](http://www.golfgtiforum.co.uk/Smileys/modern/undecided.gif)
There may be other damage lurking, which could be more costly than replacing just the bumper alone
![sad :sad:](http://www.golfgtiforum.co.uk/Smileys/modern/sad.gif)