Here's Facebook CEO Mark Zuckerberg and girlfriend Priscilla Chan in all their North Face glamour. TMZ caught the couple leaving L.A. restaurant Mr. Chow. The cameraman accuses Zuckerberg of cheating on his girlfriend. "I think somebody's going to get in trouble," he says. Of course, Chan is Zuck's girlfriend, so the couple seem more amused than worried. But since Zuck's shy, he slips loose of Chan and wanders around a bit until a black car shows up to save the day.