a small fall turns into a big headache
I was out this afternoon to make a few loops around the park only to learn that the park loop was closed for an event and cyclists were being turned away to go ride elsewhere. There were some other guys there whom I didn't know and we all decide to just leave. The policemen at the park let us cut through to a different exit so as to avoid rush-hour traffic. None of us were familiar with the area and we came up to an unexpected curb in the road.
The two guys in front of me managed to jump over, I realized that I wasn't going to make it and tried to stop and dismount. Instead, I couldn't get my cleats unclipped and I fell into the guy next to me (who I thought was behind me instead). It all happened very very fast.
We both end up on the ground and I land on his front wheel. It's slightly bent but still usable to get back to the car. Everything else seems fine, but as soon he peddles the chain sticks and twists up the rear derailer because of a bent tooth on the front ring that must have happened when he fell. Ends up bending the derailer hanger and quite possibly ruining the rear derailer.
I feel bad and offer to help him with the cost of any repairs and he immediately launches into me about how they are Campy components and it will be very expensive to repair and I had, "better be straight with him" about paying for the damage and "not try to pull anything".
So I don't know what to do: part of me says it was just like any other crash and that accidents happen and he's lucky that I'm offering to help out at all. The other part says that I pulled a total Fred and was a dumb klutz and that he's right and I'm responsible for the repairs.
Any advice on the proper etiquette here?