So sorry you're hurting and that the pet name brought all the hurt back. I agree with jeff. Just a simple 'thanks' and nothing else. Having said that, I think him using the pet name is a little baby step- a good sign. It's a shame it hurt you so much.
(((((Mishka))))) Take a deep breath. Try to take the focus away from what H has done/is doing and focus on yourself. I know it's hard right now, but I know you can do it.
