You don't fight a emotional battle with logic (what's fair in your mind).
So it's a bit like trying to logically explain to a WAS that reasons for their leaving don't make sense while the only thing they listen to is their emotions?
I thought of sending him an email just informing him of my plans, and saying that I'm letting him know about it because I don't like finding out such things from an external source myself, but I see what you're saying. He definitely wouldn't look at it the same way I do.
Accept that there is only one thing you can change in life and that is you