Friends don't let friends dinner ditch

So you know how facebook has that "See people from your high school option"?

Recently, I was asked to add a guy that I DO remember from High school.

Why? Because I turned him in for running out on his bill at the local Friendly's restaurant. I not only gave the waitress and manager his name, but the information that he was the son of the police chief in town.

I can't imagine why on earth he wants to add me as a friend.