I'm not making fun of you TX, but I did smile at the 'unforgivable and irreversible' text. Typical alcoholic delusional grandiose BS. I know you picture him being terribly upset and needing comfort, but I think you might be projecting your feelings on to him. He hadn't contacted you for a week! Note he said you had ruined his Sunday not his life. And what about the tone - How dare you! It's hard to take this clown seriously.
Be very strong about non-contact and the pain will diminish quickly. You sound like a sensible resilient person, and you've done the only healthy thing.