Gemmy
See my tagline?
I truly believe it and I think it applies to you and your situation.
In saying that, I’m not allocating any blame on you.
But… if you decide to remain in an unchanged situation you shouldn’t be surprised if you remain in an unchanged situation.
Your options might not be great, might not be the ones you wished for, but they might be the options open for you. Here is how I evaluate your situation:
Is your marriage salvageable? Well… I don’t know, not more than anyone else. I guess it boils down to some key issues that you might have to ask yourself:
First and foremost: Do you WANT to remain married to her? Many of us might question why, but the simple fact you have been battling these windmills for over a year suggests you had some hope of reconciliation. If you no longer have any wish to reconcile (and despite your anger in your post you are ambiguous on this being the final straw – as in "I believe this was the proverbial straw to be honest" rather than a more direct "this was the final straw") then start the process of getting out.
If there is any "yes" to that question then I would guess there are some other requirements you have. Just remember - we might want something, but that doesn’t mean we get it.
Can you get the message across that the truth is needed, why that’s important and what will happen if it’s not offered? Seems like she hasn’t understood that message to-date so it clearly isn’t getting over to her.
Is it clear she understands the message? Like does she confirm that she understands that she has some short period to be totally accountable and acknowledges the cost of a) not understanding that message and b) not being accountable?
Is there any way for you to confirm or support whatever she might say? Is there any situation where you can tell yourself that you have the truth? I doubt you are willing to take her word at face value so can you corroborate her story with phone-records, financial statements, friend-statements, a poly… Is that something you are willing to do or want to do?
Keep in mind we have a lot of stories here on SI where a WS passed a poly, and then the BS has retrospective doubts about it’s reliability. If you were to use a poly/hypnosis or whatever method to get "truth" you need to be willing to believe the result.
I don’t think you have any option of picking and choosing these requirements, I think that no matter how much you might WANT to save this marriage you need to have a sense of knowing the truth. I honestly think her inability to understand the immense gift you gave her of time to be truthful has irrevocably damaged your ability to believe her. All this might mean that you have to evaluate your options, what you need, what is open for you, and then select what might seem like the "least bad" option. Even if that might be separation or divorce despite some deep wish to reconcile.
Gemmy – the worst outcome of where you are today would not be that you are in the process of divorce a year from now. Nor would it be that you two are battling the process of real reconciliation work.
The absolute worst outcome IMHO would be that a year from now you are STILL where you are now, maritally, personally and emotionally.
Remember – you have power. You have options. You can make things happen.