I saw something so poignant on this forum (I wish I hadn't forgot so I credit) it changed my thinking.
"Looking for logic, morals and honesty from and addict is like looking for bread in a hardware store." And one of the members who replied said, it's even more sad when a logical person seeks logic from an addict.
Stings like a bee, but so true! Non-Addicts spend so much time chasing their tails and going in circles that we forget Addicts are not logical, they have sick brains. Most everything an addict does and says is on their terms and nothing will ever change that. No matter how badly we want to understand, we never will. Ever. Because not only are you dealing with an addict, you;re dealing with a human and we are all different. It's impossible to know why anyone behaves a certain way, much less an addict.
And be honest with yourself, would any reason he ever gave you be satisfactory? No, it wouldn't.