Sit down talk to him about it. Ask to see his phone so you may see what he is up to. Also look at his e-mails and phone records. If he has nothing to hide he will do it with no questions asked. If he resists in any shape or form then tell him your leaving. Take your boy and yourself someplace else and move on with your life. If you don't you will be unhappy for many years and so will your son. There are better men out there. Time to be a good mom do it.
Maybe try confronting him. If you are still in love with him, find out what is going on in his thick head.
That would be a sign yes. Sorry to have to say that, but that would be a good indicator.
Sorry about the first answer, didn't see the question right :[
dump him, give him freedom
Dump them and move on if there is no trust and respect then the relationship died and your wasting your time!!!
if there's no love there at all, then it's better to count your losses and move on.
you're doing your son no favors by sticking with his dad just because he's so young. you owe it to your son to give him what he needs, and he doesn't need two parents who can't stand each other and there's tension around him.