Bummer.
Yeah we all have done something like that.
when my Datsun PU was new, the guy in front started to go, I moved up, he stopped, and rolled back into me. tweeked the r/f corner of the bumper.
He said it was my fault, because I was too close, go figgure.
I had a new 69 VW. I was making a right turn, but there was a guy in front also making a right turn.
traffic was heavy on the road we were turning onto. Out of the corner of my eye, I thought I saw him go, so watching traffic instead of him I started to take off. OOPS. he was still there

. dented my head light and hood.
I think I pay more attention now

.
maybe you can find a fender the same color and R/R it.
Charlie