Sure you are angry, but you have no control over how he spins his sob story to his children. You can't change his perception of what happened. What you can do is sit down and discuss the matter with your oldest son and explain in a simple way that he will understand that his father has some issues that he needs to resolve and he can't do that living under the same roof right now. Reassure him that he's not the reason his father left.
If you decide to do this, do it in a very calm manner as your child will pick up on your anger.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
