OMG! Oh sweetie, I'm so sorry. I had a bad feeling that was the case but hearing it from someone outside your situation usually just causes more angst and doubt than anything else.
Now, more than ever, you need to step back and go dark on him. Completely dark. Send him an email calendar of the dates he will have your son, do not ask his opinion of it, ask nothing of him. He will either step up and be a man and a father or he won't. This is all you can do right now.
Also, I don't recall if you have consulted a L yet or not. If not, DO IT NOW. Now that the cat is out of the bag he may make a move quickly and you don't want to be caught unaware and unprepared.
T19 M15 S19 XH47 M43 bomb12/4/07 PA5/07 S12/26/07 D final 11/17/08 Back together with no defined R 05/2010 confused....to say the least!!!