I'm trying to put myself in her shoes. What would I feel like if I were her.
I've been trying to do that, too. I think my W is tired, she feels like she's been responsible for everything in the business, with our finances, etc. Although we decided to work on the business together, she wants more support. All of this came to a head a month ago, and in the meantime, the OW - a predator, in my opinion - comes along offering "friendship," a listening ear, support. She takes advantage of my W's vulnerability, and next thing you know, it's a full-fledged affair and all my W sees is a future without the strains and stresses of her current situation. And at the moment, the excitement of the affair and their plans and all those things are a wonderful distraction from the business, and from our (I guess) stale family life.
It's a good question to ask why we hold on, but we hold on because we love them, deep down. We hold on because it's our integrity that fights for something we've built together all these years. In the end, they may still walk away. But we hold on, because we want to be sure we've done all we can do.
Me: 46 Her: 41 M: 5.5 yrs / S: 20, 18 3/26 W and I meet OW BD: 5/2/2015, she takes off ring W goes to stay with OW 6/26 NC: 9/5 Both moved out: 10/16 I take off my ring and feel... healed: 10/19