Oh dear, he's pulling the old nervous breakdown card out.
I would believe this if he had not dangled his inailiable right to come back whenever he wanted, kisses you, there, there wifey you never know your luck I may re-appear.
People who have breakdowns generally don,t have this sort of confidence.
You know your husband best but this site is full of people who thought No, we have been married 20/30/40 years plus, we are different, he wouldn't throw everthing away children, grandchildren, us.
They do.
You are in no mans land at the moment, you have absolutely no idea why he left. Therefor you can't make a solid decision.
Understandable.
But here's where the really bad part comes in: many women find out about these affairs by gut feeling, sluething, agrieved OW or idiot husbands being so wrapped up in their uphoria that mistakes are made or sometimes they automatically seem to know the love of their life is met.
Who knows how this will end but we think he maybe gaslighting you and that is a very abusive behaviour, he's playing the victim meanwhile your mental health will keep going down the pan and maybe he is getting his ducks in a row.
The hurt is immense, we know that and it is precisely that reason we have your back.
We can't tell you how to play this but we can warn you, please don't let him rip you off financially as well as emotionally.
Sit down and think, coulld he actually be capable of such cruelty.
Stop automatically believing every word that comes out of his mouth.
I you can't face the possibility there is another women at least think of this:
If he does go for OW and manages to rip you off financially, what happens when you both leave this mortal earth?
Your half goes to your kids, his half is left to the usually younger OW.
OW then leaves everthing to her children.
Think about your childrens future, you are no longer a team with this man.