Hi Achilles,
I am sorry that you have hit one of the low points that are part of the rollercoaster ride.
Sometimes it is hard to predict when they will hit, but over the last few days and weeks you have been thinking about a lot of issues and details in back and forth discussions with people here. That can be mentally and emotionally exhausting, and I think you may need a rest from all of this for a few days.
Please, Achilles, be good to yourself.
Make sure you are eating and keeping yourself hydrated. See if you can focus on something else, like a hobby or reading, something unrelated to affairs that will give your mind and heart a rest.
Sometimes we can keep on bashing away at these things without realizing how low our batteries are getting. And when our batteries get low, our resistance gets low, and we have something like a collapse.
I have had a few of those during troubled times, and I am sure almost everyone here has also had them. You can feel like you have no energy. No way to fight back against a hundred foot high tsunami that looks like it is going to sweep you away, and because you are so run down, you think, "Fine. Sweep me away. What does any of it matter?"
Achilles, I have no idea what your wife did or said, or did not do or say that you needed from her, but the reason it had such a big impact is because you are more exhausted by this than you knew.
As for your wife, nobody knows how to do the 'right' things in the aftermath of infidelity.
Just as we on the betrayed side can struggle and flounder as we try to work out the best thing to do, along with dealing with the pain, the people who caused the pain and betrayal can also struggle and flounder in their attempts to do or say the 'right' thing. And sometimes they mess it up, big time.
If the process exhausts the people who betrayed us, they can get tetchy, defensive, lash out, or withdraw into a detached shell of their own. Tired people are not at their best, and if both of you are tired, then your wife's actions are going to hit you harder than they normally would.
Have a few days away to recharge your batteries, Achilles. You are going to be okay. I say that as someone who has crashed and burnt several times, and bounced back every time. You can and will do that; you just need to build up the energy to do it. And you will.
Sending strength and bro hugs across the Atlantic to you.