I know marriages do end, but i think you need to finish what you've started before you start a new relationship.

you are having an emotional affair with this man on the phone, which is sometimes the worst kind of cheating. When you are sharing your innermost thoughts, hopes and dreams with someone other than your spouse....

You obviously did this because of the issues you have with your husband....but you need to fix what you have before you start something new...

Like Lee said, you are in the honeymoon stage. Everything is great when you are a voice on the phone.
when you live together and have responsibilities and bills and real life involved, it's not all fun and romantic anymore....not even for the happiest of couples...

Do you love your husband?
Do you want to fix your family?
Do you want to lose your son?
You and your husband must have had things in common in the past, right? Have you both really changed that much? Is he abusive to you?