Yeah, if I were him, I would feel totally bad. He should have at least offered to pay to be nice, not got on the defensive! I guess sometimes it takes stuff like this to figure out how good of a friend you've got.

I remember one time in highschool, I opened my friend's car door and the handle came off. It was obvious that I didn't break it, it was already messed up. But I felt that since I was the straw that broke the camel's back, I was obligated to pay for it.