Barbie-
Your H and mine have so many similarities it’s crazy. He also said when he moved OW in that it was better than being alone. At least he wouldn’t kill himself. He also has stated he hid behind a fake self confidence while always feeling less than. Also, same with work. He got very high up, but then young guns coming in with new college knowledge and making him feel insecure.
Wise words from Hearts Blessings ( may she RIP)
If you want to end the marriage, or if you want to stand and wait to see if the marriage eventually comes back together, those are your choices. However, he will do what he think he needs to do, when he thinks he needs to do it, and again this has nothing to with you, and everything to do with him.
This is an emotional, mental, and spiritual battle fought on the inside of the mid-life spouse, and until he begins resolving his issues, things will remain confused.
You would need to begin examining yourself–when he put you on this road that was not of your own making, he made this about you, just like his crisis is all about him.
Learn to detach and emotionally distance from his drama–it is the only way you’re going to be able to cope. I also understand that you’re grieving a marriage that was sent to the death in his mind when he turned on you.
Only time will tell whether he will begin trying again with you or not. All you can do is learn to live life for yourself, while keeping the door slightly open for his possible return, if indeed, you choose to do that.