Just how long did you know this guy before you fell pregnant and married him? Why would you marry a man that didn't love your son like he was his own? Why would you put your son in that position? How old are you and what are you doing with your and your childrens lives?
I don't know what it is you're exactly asking here, but I will say once again ... Why would you marry a man that alienates your son? Is your picker broken because it sounds like the one you picked doesn't have much love to give you, your son or even himself.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion