OK sorry just re-read your thread and I see the DR book is on its way.

DIVORCE = SPACE

So when he says he wants a divorce he is asking for SPACE.
YOU need to give it to him.

Does he know what it is going to be like after you are divorced?

Are you still going to sleep with him, cook,clean, do his laundry?

These are all things that you can 180, IMHO.

Don't worry about whatever you have done you can only control the future not the past.

I would continue to DB with him.

Keep posting.

Me-70, D37,S36