Renee, Dropping the rope doesn't mean you cannot post here. It means leaving well enough alone in the world of wah and mlc people. It means turning the situation over to God and living your life to the fullest. It means you have no control over your situation, therefore, drop the rope and let nature take it's course, i.e., allowing him to make his mistakes and hopefully learn from them.
Yes, they do turn cold towards us. It's the only way for them to move on and it's a way for them to put up the wall so that we cannot break it down. It's not for you to understand why he's getting married so soon. He may have known this woman for quite some time and they "clicked" as soul mates. No one can answer why some people go off the deep end into euphoria and marry that quickly. As for more children, we'll see how that one pans out. It could be all talk. Twins and even identifying the sex of what he would like to have is like looking into a crystal petri dish and identifying which swimmers will hit the target. He's just talking off the cuff and have grand visions of what he would like to have.
Some wahs do marry quickly and shut the door on the past, if the right soul mate comes along. Others don't. It's just like MLC, it all depends upon the person, the circumstances and the issues from the past, etc. From what I have read, no wahs very seldom return to the marriage. Some may become good friends w/their former spouses, but they do not have any desire to return. The same could be said for some of the mlcers as well. It all depends upon the situation and the individual. That's why it's hard to say to you and others yes or no about will they reconcile...everyone is different, every childhood is different and the same would apply to the personalities as well. Only God knows the answer to this question.
It's okay to wonder, but do not dwell in the area of wondering about whether he'll return or not. The only thing you need to be trying to do is getting the focus back on to you, your son and your nephew. All of you need some support right now. You mentioned going to church. Seek out your pastor or minister. Churches usually have some type of support system for their members. Do not allow pride to hold you back on asking questions of the church. They will not judge you.
BTW, you are far from being detached from your situation. It takes a long time to get to a place whereby your xh's behavior doesn't affect you. It's one day at a time.
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.