OK, one more note to respond to WBFA...
First, my overarching perspective
- OP is in a not-good and heading downward marriage, progressing over a couple of decades, and this is the fundamental problem at hand
- He found private correspondence between his eventual future wife and her foster brother, never meant for anyone else's eyes, that together with the 50 year history of those two can help explain the marital downward trajectory and her behavior in the marriage.
- When confronting her with the content of the letters, she confirmed that the direction of the marriage is downward.
- It's time for the OP to make some hard choices that he 100% controls.
Hmmm. What do you mean he is 100% the problem? Do you think the OP is being unduly annoying asking his wife of 53 years, all these questions about those letters and that he should just be quiet and let it all go?
There's a third option, just move to separate based on the current state of the marriage and where it is going, especially given what was in the letters.
NO. A thousand times no. He discovered a problem. As in, he didn't MAKE anything into a problem, he instead DISCOVERED a problem.
No, the problem he has is the marriage today. He discovered a possible explanation from the past for a problem he has today, which is his marriage today. Frankly, you could say it steers him to the solution.
I mean, if his marriage today was fantastic, who'd give a shit about 50 year old love letters?
Does it really have to be a problem? What if you had read all those letters and then just held that knowledge and took it to your grave?
What do you mean by this. This reads to me like TEXTBOOK Rugsweeping. So he is supposed to just squash what he read in those letters? I cannot think of any other ways to interpret what is in the quoted bubble just above.
First, I have never, ever, EVER seen anyone here advise that upon discovery of something that the first thing the person should do is to rush to confront and reveal what you know right then and there.
EVER
You hold that information and use it to start reframing your world, continuing to dig.
ALWAYS
Second, that idea that you have to reveal your sources for your actions, otherwise you are rugsweeping, is just flat-out monumentally wrong. You are rugsweeping if you don't take action.
You can reveal what you know, and argue and argue and argue, and change nothing...that is rugsweeping.
If you know what you need to know, and are going to leave the marriage (or going accept and stay) why ultimately is there a need to confront? You know enough.
I kind of feel like between the current state of the marriage, the letters, and the history of the BIL and wife over the 50 years, that maybe the OP knew enough.
Here’s a question for you, how much do you use your wife as a mirror in which to see yourself? How much of your identity is attached to your marriage to her? I ask this because of your concern about whether your identity is Plan B or plan A, and your insistence that she is the one who will determine that, i.e. she determines your identity.
I have no idea where this is going, but if you spend 50+ years with someone, you are going to find yourself using thim as a mirror. And being a bit dismayed that all this time you were your spouse's second-choice.
Where this is going is the idea that down deep, unexamined usually, we tend to spend our lives seeking outside affirmation that we good, that we are worthy. And that much of the pain in our lives comes from this. And that it does not have to be this way.
Does it make sense to you that you would determine whether or not you are a 'good' person based on the behavior of a cheating spouse with low morals? Why would you give them that power over you? Why not move on and find good people to be with?
This reads like extreme victim-shaming. So, OP's wife is stonewalling him because he is annoying? Not trying to assume the worst this post here but I don't see another interpretation.
That's your problem with the interpretation.
I don't know why the OP's wife is doing what she is doing. The letters steer towards an explanation, but it doesn't matter. She is not treating him like any marital partner deserves today.
If you believe she is a mirror held up to him, then her actions say he is not so much of a person and is undeserving of love (do you believe that?). The proper response to that problem of being an undeserving person is to become deserving, right? Convince her to love him by love-bombing, or wheedle and manipulate into faking it, win her back, etc.
If you don't think they actually say anything about you, if you believe their actions say everything about them and only them...what's the right next step? Life's too short and it is exhausting to spend it with people who don't want to be around you.