T......you and your W need to sit down together and tell him if at all possible. He is also way too young to have the thought of his mom being responsible for this in his mind. There will come a time where you can sit down and tell him the truth but not now. Maybe over your first beer together
When my W and I told our D's (who are 8 and 6) we told them that sometimes mommies and daddies need to live a part even if they love each other. They both cried and asked us if we were breaking up, we didn't even tell them the D word. We thought they wouldn't understand.
We also told them that we loved them no matter what, they would still have the same friends, go to the same school and none of this was their fault. The next day I took a day off and went with them to IKEA to help them pick out bedroom furniture.
It was very hard emotionally to watch my W be so excited about her new place but I didn't want my D's to see that we had issues between us, that I was angry and putting that on them.
