I am very sorry that you are here, but you will meet a lot of people who are on the same path as you are and can offer up suggestions, advice and support to you along the way.
I suggest that you stop asking him questions about why he feels the way he does and what is it about you that has changed his way of thinking. The journey that he is on is one that only he can travel. This is all about him. You didn't break him, therefore you can't fix him.
Ctflor, what you can do is take care of yourself and your child. Get plenty of rest, eat and exercise. Read as much as you can about mlc and do not discuss MLC or this board w/him. He doesn't see that it's him that is having difficulties.
I would go to counseling, but be prepared for him to turn things around and justify his feelings after a few sessions. He may determine after one session that he's not going to any more, but you continue to go if it makes you feel better.
This is a very, very long journey and the clock is extremely slow in his land...you, on the other hand, will find your way, but it's going to take you some time. Watch your bank accounts and credit cards. You may want to set up a separate account in your name, just in case he starts spiraling out of control.
Come here whenever you need to talk.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.