I don't know the story - I"m just butting in - I totally get being tired and in panic mode and "WTF" mode. I get wanting to know one way or the other.
But I still think we can only make decisions for ourselves - if he "doesn't know" and if he doesn't withdraw the filing, YOU have to make the decision for YOU. If you have come too far to give up, file for the extention. You can't control if he will withdraw or not. You can only do what you can do to not end things unless YOU are ready to or not. YOU need to decide if you want to let him go or not - not ask him to decide. He won't right now.
Just my two cents, like I said, I don't know your whole story and I could be way off base.
