These responses are absolutely amazing, thoughtful, and helpful. Thank you all! I am taking all of this to heart.
I did send him an email yesterday explaining that it wasn't me and that when I was drinking, I was something entirely different that what I am sober. Probably more like a monster when drinking.
I was surprised that he wrong me back even though he is angry. He said he will call me today when he gets off work so we can discuss it. I'm kind of nervous about it but this will give me a good chance to talk it over and explain the truth.