re: Just dined and ditched the ex

OP is a lame story. But here's what I'm curious about:

Why would the chick be on the hook for the stuff OP ordered? She didn't order it. Does the mere fact that she was sitting at the table with him make her liable for it?

For those of you who work/have worked in restaurants, what is done in situations like this? When it's finally conceded that the guy isn't coming back, what happens? Does the restaurant get the guy's address from the person left and go about collecting from him that way? Dude said it was a neighborhood place so they may not have far to go.

Or did the friend that won't call him back maybe come by and pay the bill and is now collecting a little reward?