Hey NLW! The best advice I can give you is to not worry about what motivates the WAS to return to the marriage or not. Instead, take your husband out of the equation entirely and focus on being the very best NLW you can be...a woman only a fool would leave. I truly came to a point during my separation where my only goal regarding my husband (soon to be ex at that time) was to co-parent effectively together. In my mind, I was moving on. I honestly cannot say what motivated him to come back; I believe it was a combination of things (he waking up, realizing ow is a complete nut job, seeing me and the kids as the amazing package that we are, etc). Try not to get ahead of yourself and take things one day at a time, one DB step at a time. Right now it's time to focus on YOUR goals!
You are doing great, and you are getting excellent advice from some great DB'ers and vets. Follow what they recommend, and hang in there! ncl