Now, my BW won't celebrate her birthday, my birthday, mothers day, or our anniversary because I met her at the hotel allegedly near those dates.
That is completely understandable. We ruin those dates for them. Sometimes they can claim those triggery times back, sometimes they can't. But either way, it's a process of time. A long time. Like, 2-5 years. And that's the fast track.
I'm a guy, I have enough trouble remembering to brush my teeth in the morning let alone the dates I met the OW at the hotel.
Don't use the "I'm a guy" thing as an excuse to not know dates. First of all, it has nothing to do with being a "guy". I'm married to someone that can remember dates better than I can. And I'm a woman. Women supposedly "don't forget anything" right?
It's understandable that you may not remember everything, or even specific dates. 18 months is a long time.
When your wife says, "WHEN!?" Don't say, "I'm a guy! How am I supposed to know!?" That escalates the situation. A soft answer is required. "BS, I am not quite sure. However, I will go over the AP's work logs and any information on my end to try to piece things together to give you some peace of mind."
Also, maybe take the initiative to do a poly on your own. Schedule it. And tell her that you're doing it, and would she like to provide the questions she wants asked to the person administering the test.
it seems like I can't do anything right by her.
This ties in with the anger of a BS. Doesn't make sense, doesn't make it "right". But they're in a world of hurt. Be prepared to be the target of alot of crap.
The sun is out? Fuck you for cheating.
The grass needs mowed again? Fuck you for hurting her.
You are the victim of a car accident? Fuck you for being in the way of the other driver. And fuck you for cheating.
It's not rational. It's not always "fair". But then, neither is the situation we put them in. My husband wasn't a typical rager, but I faced his anger in other ways. There were many times that things completely out of my hands were my fault. I had to do what I could, and walk on. He came around eventually.
I do understand your frustration with the other BS making false statements. You must understand, he's just as hurt as your wife. You manhandled his wife. And he's going to do everything in his power to make your life hell. Especially if he knows your BS is going to light into you about it. Don't argue. Don't admit to anything that you really didn't do.
Consistency. And time. Those are the keys. You consistently tell all truth, all the time. Work on yourself, do your best to rebuild. In time, she will see that your actions are backing up your words.