Between the hot cheats: J. Lo reportedly hired a private eye to spy on A-Rod, whom she suspected of catting around. Anybody here have a whole name? Anyway, it's a rule: If you hook up with a man who cheats the way other men go to work, chances are good he's not going to become irreversibly monogamous. There's as much chance of that happening as there was of her former boy toy giving up male peep shows.