My wife, Oktobermest, is BANG ON.
You are clinging, understandably, to the memory of the person you thought your wife was, not the person she IS.
You need to open your eyes and ears, and listen to what is being shown you. Your wife has betrayed you. She is unremorseful. She is defensive. She is unwilling to put in the work to make you feel safe at her expense and has no problem telling you this. She is almost certainly still involved with another man. this ONS nonsense is bullshit. they are still at it I assure you.
Meanwhile, you are not only giving her a free ride for betraying you, but actually taking on guilt for the state of your relationship. How hard do you think she was working on your relationship when she was having sex with another man and whispering his name.
If you put the memory of your wife on hold for a moment, and look at what is in front of your eyes, why on EARTH would you want to be married to this person. Divorce is not something to be feared in your case. It will set you free from this nightmare. I know you are afraid. I get this, I really do. But there is nothing post divorce that can happen to you that is as bad as the emotional abuse your wife is putting you through now.
Oh, and Oktobermest is right. Your MC is feeding her fog and fantasy. Personally, I think you need to 180 and detach. If she leaves then she leaves - stop being scared of demanding being treated like a decent human being. she has you so under the collar that you are actually afraid to get angry in case SHE leaves. You have given her complete control of this relationship. she's going to rip out your soul if you don't wipe the cobwebs away and see what she is doing to you.
[This message edited by LonelyHusband at 1:05 PM, November 21st (Wednesday)]