It's inevitable for you to feel bad- because your heart calls out to him and no one here would blame you for having those feelings. But the truth is that you know that morally you're doing the right thing: had this been anyone else, you would have taken those same actions and turned in those cards and all those pawn slips, etc, without a second thought.
Without a doubt addicts pray on the special connection they have with us: their ability to easily manipulate us. They take that as far as they can to avoid the consequences of what they are actually doing... And I'm sorry that he left that message for you-- but be brave, without a doubt there will be more like that in the future as he tries to sink his nails into you during the separation. Do what you have to do to take care of yourself, we're all rooting for you.