I too said the same thing that I felt even if H regretted leaving and filing on his death bed he would never admit it none the less try to work things out.
HOWEVER
Just know that if someone wants something bad enough they will do WHATEVER they have to.
You are worth that and more ... Whether it be with your H (should you decide that) or in a new R.
I think you need to detach and take a break - you've had a lot happen lately. Maybe take some time to recharge and get your head on straight before overwhelming yourself