We park on a sort of lay by and I was trying to fit in between his car and another, as to which I guess I misjudged my distance and just grazed his front bumper, and my back.
I managed to rub all the mark off mine, so you can't tell anything happened. But his front bumper mark won't come off (discreetly tried), as it looks like his paint has been grazed off unlike mine.
I'm sort of wondering what to do here. Because my car doesn't have any marks on it, and I they haven't seen it was me, do you think I should mention anything? What would you do? I know I have the responsibility to tell them it was me but the fact that no-one has seen or anything just makes it quite tempting to leave it be.