I keep hearing "he'll regret it, you'll see."...."he'll realize the mistake he made."
I honestly don't think he will.
He wanted out.
Why would he regret it?
I will not lie, it would make me feel fantastic if he confesses to making the mistake of leaving me or if he regrets his decision but what are the odds?
I mean seriously, if you are the one to find someone else, file and want out -- would you really regret it?