Yes, he wants only that from you because then he isn't faced with the reality of what his actions have done to hurt you. Your lack of confidence in him isn't because you've just chosen to feel that way. Your pain, your wariness, and your inability to forget about all that's happened are completely reasonable and justified. I understand that he wants an enthusiastic cheerleader supporting him all the time, but doing that isn't really an essential part of your healing process. I don't believe that you acting as if nothing ever happened would be helpful to his recovery. It would only allow him the opportunity to avoid facing the consequences of his behavioral choices.