A couple of suggestions for you. This goes into a couple of tangents, but hopefully I can connect them in some way in conclusion:
First: When you think something is precious you tend to be more careful with it. Even something sturdy like a diamond. If you had diamond worth millions, you would take extreme care of it because you KNOW that it’s worth is in its size and purity and that if you are careless, you can lose it. Well… your marriage to this woman is precious to you. It might be priceless, but if broken it loses its worth. It becomes scrap. When you realize this, you tend to be more careful in how you handle it.
Only… this diamond of a marriage isn’t tangible. It’s a perceived value, like you have a closed box that you THINK could contain a diamond. At some point you MIGHT have to accept that the box is empty, or the diamond only polished glass or has a flaw and that your efforts to save it aren’t worth the effort.
OK – Why is this important?
Well… Imagine you had an employee that knows that NO MATTER how he performs you won’t fire him. He can miss deadlines, take days off, steal from the tilt… whatever. Knowing that despite your unhappiness he’s getting a check at the end of the month. What incentive does he have to change?
The moment you realize that there are only two things keeping the marriage together is the moment you get the strength to change things. Be it changes to IMPROVE the marriage – to find the diamond in the box – or be it changes to realize it’s an empty box and to move on.
Those two things? Really simple: You realize that you are in the marriage only because you want to be in the marriage. She realizes she’s only in the marriage because she wants to be in the marriage.
That’s it. That is the only thing that can hold a marriage together. Anything else is fake, an excuse. Your kids will be fine with divorced parents, you won’t live on the street and starve, you will retire with a decent pension… The streets of our country are not lined with starving and desolate people that got that way by divorcing.
When you have this awareness, you can have the conversation with your wife:
Why are you married to me?
Why am I married to you?
Why are we married?
This can lead to the conversation:
What is it you want in a marriage?
What do I want in a marriage?
What do WE want together?
You remove all excuses. Can’t afford divorce? Yes, you can. Can’t afford 2 houses? As a divorced person it’s only what YOU can afford, what she can is of no issue. Bad for the kids? No – nothing confirms being raised by two loving, but divorced parents are worse than being raised in a dysfunctional family…
You also accept that the precious box just MIGHT be EMPTY, or that her actions or lack of positive change could have changed that large precious stone into rubble.
Second:
She didn’t cheat because of the marriage or because of you, and that’s why MC won’t necessarily deal with the infidelity. Again, a parable: If you had the worst smelling breath in the universe… your wife could talk about it, ask you to brush and floss, use mouthwash… whatever. She could suggest treatment, a doctor, dentist… She could even leave you if you ignored her requests or continued your diet of garlic, coffee, and onions. All these would be "normal" reactions to whatever issue she had with you.
What would not be a reasonable response would be to stuff a shotgun-barrel into your mouth and pull the trigger.
If she did that nobody would justify her actions. Nobody would think YOU caused it. If you survived… well… Your friends wouldn’t rush you to a dental hygiene session suggesting you and your wife go to a gun-safety course later.
In 99 out of 100 instances I think infidelity is due to insecurity. Validation, power… insecurity. That is internal. That is in HER not you. That’s why she NEEDS IC. She needs to understand why she DECIDED to have an affair.
IMHO this isn’t optional. She needs a professional to talk this through and find different coping mechanisms. For some people 1-2 sessions might suffice, for some its long term.
When you can sit your wife down and tell her something along these lines is when you finally get to see if there is something salvageable:
Honey – I always envisioned growing old with you but I have realized that there is one thing IMMENSLEY worse than not having you, and that is sharing you.
The minute you decided to have your affair is the minute I lost you. At best I share you. I shared you with the OM, and now I share you with the infidelity.
I don’t share my wife.
I don’t WANT to divorce, but I understand that I don’t want YOU – I want YOU AS MY WIFE. While you are in infidelity (active or not) I don’t have you as my wife. If you aren’t here for the sole reason that you want to be married to me then I don’t want to hinder your future happiness. It’s better we accept facts and move on separately to a happier life.
If, however you want this marriage then I too need to want it. I need to believe it can improve. For that you need to dig deep into why you had your affair, and that "why" doesn’t really involve me. You need counseling to improve yourself.
We can do MC, but that can only help our communications and in moving forwards. Either together or as a couple.
I want you to understand that it’s not a given conclusion that I make it through this with you. It’s what I want, but even more I want out of infidelity."
When you two are together at that point – where you realize that if you don’t take this crisis seriously you are doomed to unhappiness – that you two can finally decide your next steps.