I don’t think a marriage can ever be whole if even one partner is carrying this monolith of a secret. It will always inevitably hinder you two in some way or another. However, once out it can be dealt with. I think it’s very important that you acknowledge this.
We have had many instances here on SI where a WS feels a need to tell of a past affair. In your case it sounds as if done reluctantly, but I truly think your marriage would ALWAYS be lacking and limited by the secret. Possibly even more so than from the affair itself.
Keep in mind that the pain is fresh to you. Maybe you rug-swept all those years ago, maybe not. Not really an issue. The pain you are dealing with is the same all of us have experienced, albeit your response might be reflected in the time since.
I have seen people chose divorce from what might be assumed less than what you are dealing with. I have seen people reconcile from what might be assumed more. Both paths are open for you. I see from your posts you want to reconcile. I have repeatedly stated here on SI that marriages can reconcile from anything, but only if both partners want to reconcile and are willing to do the work. That work is based on openness, honesty and TRUTH.
IMHO the main issue is that the truth be out. What’s not clear right now is what the truth really is. Was it only the one boss? Has she had other affairs? Are they in any contact in any way or form? Last time she looked him up on Facebook? Last time he reached out to her? How did it end? Why did it end? When did it end? All of this should be questions you are asking yourself. Maybe not because they are all true – I think the odds are high this was her only affair, that it has been over for all this time and that they are in no contact… But the questions are “normal” and expected and they need to be dealt with in a firm, conclusive way. IMHO it’s imperative for you to make a decision on your future that you are very clear on what happened.
I want to stress one thing: I do not see any benefit nor think we have any grounds in assuming what you are dealing with is worse than it already is. I think we do our posters a big disfavor when we hit them with DNA your kids and this is not her first rodeo assumptions as if they were near facts. MAYBE later in your process mrplspls we might have better grounds to make such deductions, but for now then ignore such drastic assumptions.
The best comparison I can think of is if your doctor finds something that indicates you have a tumor. That tumor was the affair all those years ago. You might have assumed that it was benign, but now realize it’s growing and bothering you more than expected. What you don’t know is if it malignant, treatable, has spread, if it’s an aggressive cancer, a treatable cancer, if it’s chemo or radio, both…
You could google all sorts of cancers and tumors and read all about how some are 100% fatal and/or uncurable and you could possibly fit all the symptoms to your situation. However, it won’t be clear or conclusive until you have done the real tests and gotten the truth. That truth is as is. It’s the TRUTH. Once you have the truth you learn the prognosis and the treatment. This applies to your marriage. What happened happened. It can’t be unhappened and ignoring it won’t make it not have happened.
I think that when we take something or someone for granted we tend to lessen the value of that person or thing. Like if we take our job for granted we might get complacent, drop our performance and standards and eventually get fired. If self-employed we might not get fired, but the basis for our income dries up. I think we all go through periods where we take our marriage for granted and I think that can be a major cause for why we stop demanding AND meeting standards. I think it’s a key-factor in a good healthy marriage to realize that the only thing keeping you in it is your and your spouses decision and will to be married. I mention this because there needs to be a fear in BOTH of you that if this isn’t dealt with correctly it can and will threaten your marriage. With that realization we get the drive to do the hard work the situation demands.
What is that work?
Getting the truth.
That truth will then dictate the next steps.
My strongest recommendation to you right now would be to focus on knowing the truth. Maybe you already have it, but list down what you need to know. Things like I listed above. Keep that list as factual and non-emotional as you can.
Sit your wife down and say something along these lines:
Wife – I love you and really appreciate our marriage. I want nothing more than to grow old with you and I will do A LOT to work on us. I truly believe that the affair – although a secret to me until now – has hindered our marriage and think NOW is a time where we can truly start a new, better phase in our relationship.
However… We can only base that future on the TRUTH.
I need to know some things. These are hard things and are about the affair and our marriage since the affair. They will create the base we reconcile from.
I promise you this: Most of all I want to be your husband. No matter what you tell me I commit to working things out with you. There will be no gut-reaction to file or leave. I can’t promise a result because that’s dependant on what both you and I do, but I promise I will try my best.
We need to discuss the affair. I need some truths. If you want this marriage to survive this I need to feel like you trust me enough to be totally honest. Anything you tell me NOW and in the next few days will cause less damage than anything I might discover on my own or in a few months time. Whatever YOU tell me shows honesty and trust. The two things we need to base our reconciliation on.
At some point – maybe a month from now – if I don’t feel safe or if there are too many gaps I might request you take a polygraph. If I do then I will abide by the result; if you pass I will believe your story but if you fail it will clearly show me you don’t trust me. Add that to the affair and I will have to question if this marriage really can survive.
With this sort of base to work from your wife should be motivated to answer the questions.
Your next steps will be based on her response and reaction.
But friend – realize that her initial reaction will be to withdraw and be quiet. Probably blame-shift (as in well… you haven’t been the perfect husband all these years. Remember when…). Avoid all arguments and side-trips. Focus on the importance of the truth being out.
Focus on this one main project: Get the truth. Once you have that then come back and we can help you on the next steps.