Most Helpful Guy
Your not his girl and he owes you nothing so he's salvaging what he can from the situation so as not to damage his prospects with other girls. Technically if he was banging another chick he dropped you.
Most Helpful Girl
Because yes he's upset that he didn't do it first, don't give in and don't talk to him. Let him come to you and honestly if you're really over him, just move on and don't talk to him but if you think you might still want to be with him don't give in