Renee,
Do not ask your son any more questions about your xh. You are putting your son in the middle of the situation and you cannot do this. Your son has to have a relationship w/the both of you and it's very difficult if he's been questioned. Do not talk about your xh around your son. Your son doesn't want to take sides. Okay?

As for phoning your xh....don't do it. Just let it go. By your not calling....it's sending a clear signal that you really aren't bothered by what he's doing and w/whom.

Live your life to the fullest and as if he will not return.