2.When he smokes weed and plays World of Warcraft all day while you're out working, and he won't get a job because he doesn't believe in... jobs.... ??????
5.When he emails your boss and accuses him of "encroaching" on your personal relationship by having drinks with you in the hotel lobby during a business trip.
15.When he tells you flat-out that there is nothing going on with his pregnant coworker and then you find out from her that actually, yeah, he's the father of her child.
16.*takes a deep breath* When he won't stop burping in your face and farting on you, so you finally confront him about it and tell him to stop, and he acts like an asshole and accuses you of overreacting before finally apologizing, but then later that night you're going down on him and HE HOLDS YOUR HEAD DOWN AND FARTS WHILE YOU ARE BLOWING HIM.
17.When you keep smelling a mysterious poop smell in your room and you later discover that your girlfriend has been wiping her own shit on the carpet under your bed.