I've been following along. I'm going to ask a question and by no means are judging you or what you do in the least.
My question is: You say your BF is waiting to see if you two marrying is God's will. Does your BF ever tell you what it is that he considers God's will? IMHO, if you two have found the kind of love that makes two want to truly commit to each other then what else is needed as a sign?
I understand scared, I really do. I also believe things happen for a reason and that there are never any guarantees in life besides that we'll eventually die (oh, and taxes).
As far as your R with your son goes, I think Ian is spot on.
Everything with time and patience will sort itself out. Good luck!