DS parked his car on the wrong bit, he has the back driveway but parked it in DH's spot as he thought he'd be back out before DH got home. DH came home, obviously thinking it was empty and as he reverses in, he doesn't particularly see what's there as it's really tucked away. He reversed on and boom, hit DS's car. There's quite a bad dent in it. Have been quoted £450 to fix. We don't particularly have the spare money and would have to 'find it'. DS has a few thousand in savings and DH thinks he should pay for it if he cares enough about the dent because of the way it happened.
After opinions please and thanks for reading.