Separating Inevitable

[figure-it-out]

Hello,
I echo what Stander above says. I have been in this nightmare for over 2 years and my situation is very much like yours in terms of length of marriage, etc.
I know everything inside of you right now is probably screaming to fix this and make it go away but you can't. This is your H's path to walk and you are pretty much along for the ride as long as you choose to be.
I am not trying to alarm you but speaking from my own experience my H's EA quickly escalated into a PA fairly quickly after moving out. In my situation, I feel like once he was out he needed to live out that whole "single man" fantasy he felt he had been missing out on for so long.
As in your situation, I feel a death in the family (my step son's to be exact) was a big catalyst in pushing my H into this situation.
If it does escalate it does not mean the end of your relationship (unless it does to you) many people on this board have worked through/continued to work through much worse.
You do truly need to work on yourself for the time being. Listen to some of the reasons he may list in regards to his desire to "figure things out". Examine what part you may have played in these and focus on changing on them. This is NOT your fault but each of us has things we can work on.
Love your children extra hard. They won't understand much of this and will look to you on how to behave. Give yourself a break. As many people wiser than me have said "you didn't break him and you can't fix him".
We are all here to listen and help however we can. I regret being in the shadows for so many months. There are many wonderful people on this board with a lot of good advice to offer.
Hang in there!!