You must be quite unwilling to be sucked back into the drama of his life. He made these choices. He has to live with the consequences of those choices.
Live your life, and don't worry about what you can't control. If he shows up, have a plan of attack. If he doesn't, you've wasted all this energy worrying about something that never happened!
Prayers and hugs to you! Stay strong sister! You can do it!