Welcome, DC, to MarriageBuilders...
You have come to just the right place, I believe, to save your marriage. Choose hope, don't try to find it...it's in you.
Here are my suggestions for getting the most out MB...
First, move your post to Infidelity: General Questions II forum...it gets the most traffic. You do this by cutting and pasting.
Second, when you paste, make paragraphs. I'm not bashing you for not having them...I often suggest this because I have old eyes, as do many of us regulars...and no paragraph breaks make it tough to read, hold my place, and to quote from in order to respond to you. A courtesy, not a criticism.
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Your story is very important...and like all the relationships in your life, you're half of this one, posting on MB. Kudos on your bravery and commitment. Big kudos, in fact.
We can only be half...and minding our own half is really difficult when we've been taught to believe marriage makes you one person...when it's two complete, whole people in one union.
Other great stuff you can do for yourself and your marriage...
Get "Surviving an Affair" by Dr. Harley...purchase or borrow it from the library. Read it...and you'll see where hope resides in you and that you're not crazy. Not at all. You're human. So is your WW.
Read all the articles here on this website, beginning with Basic Concepts...read to soothe, still yourself, and know...learning takes the constant spin out of the mental loops you might be experiencing.
Those loops are understandable...as is your pain, frustration, fear and anger. Do not act on them...know and accept what you're feeling right now.
Don't forget "right now." You know feelings change...learn why they do.
As you read, you'll see the MB Plans A and B...Plan A comes first...involves exposure...like you believe this guy is divorced...how do you know? What about a GF? Find out, not through your WW, all about him...so you know who to expose to in his life...and list those who you will expose her A to in your family and hers. And at her work.
You'll get a lot more advice on GQII...so I'll stop here.
You are not alone. You are not powerless. Sure can feel like you are.
You're not.
LA