You are scared.
You don't want to be the one to break up the family.
You are still wishing that this is all some horrible mix up and soon everything will become clear and be able to stay the same.
That's okay, no one blames or judges you for that.
There are many voices of bitter experience on mnet who know this story and it's variations too well.
If you need to stay in the marriage and keep the family together then do that.
Make a contingency plan for yourself, start thinking now about how you can practically manage when he goes.
Plan how you will take care of dc/finances/school/work/home but more importantly plan how you will look after yourself.
And how you are forced to be the solution to a problem caused by your husband.
You didn't do this, he did.
Sadly you will be the one that has to bite the bullet.
He could change he could be faithful he could stop shagging or trying to shag other women.
If he does you wasted some brain time planning.
I hope he does but experience tells me he won't.
Don't rush or dig deeper.
Move your mindset to the next step, be ready to take it when you need to.