Hi tonygameel,
This is a good place to be as you have the collective experience of some of the best people in coping with infidelity.
As for my two cents:
But the truth was she went back to his apartment a second time a week later. This time she was sober and with intentions of finishing what they started.
To this day, I don't know if I have all the details about what exactly they did (or even if there were more encounters).
She took her clothes off. Gave him oral sex. (which in many ways is harder for me to stomach)
She was adamant that actual sex never happened - swore by it - but the fact that she'd perform that act on this guy is something that gives me literal nightmares. I'm so embarrassed, shamed and dishonored by it, I can't share this with anyone.
I feel this is where you are stuck.
Part of my story is eerily similar to yours in that my WW got involved with a guy, met him in a private place on a couple occasions, admitted giving him oral, trickled truth, swears there was no PIV intercourse.
In my mind there HAS TO BE more than she admitted. How could she possibly change so drastically from the woman I knew for 22 years and do this crap.
I have spent countless hours going over texts, travel logs, google maps and all kinds of exercises to make it make sense or find a smoking gun.
The TT is what caused more truama than the acts although that was more than enough. This is why you feel the PTSD. You are still fearful that there is something else or that she will do this again.
Trust me, I understand. I still have my times of rage and disgust and sadness as I approach the 2-year mark. I have come to accept that the damage done to me will always be a part of me.
However I will share what has helped me the most.
There are some (former) wayward wives on these boards that have given me some understanding of my wife. The crazy thought processes that led her to those actions and the guilt and shame that resulted from them.
Hikingout, Walkinoneggshelz, Bravesirrobin just to name a few, in sharing their stories and accepting responsibility for their actions and wayward thoughts..as well as digging deep to own their shit gave me the opportunity to see my wife as a flawed human and not this angelic being that I had created in my mind. They were capable and willing to do the work to change from the people who did those disgusting acts to people they feel they are ok with being.
That is the one key to the whole thing....YOU have to be capable of looking at your wife for what she IS as opposed to what she WAS...while maintaining the the rationality to know that she is capable of the acts she committed.
In order to do this, you can NEVER take divorce off the table.
Any marriage is susceptible to divorce and should be treated as such. In doing so you can understand that it is fragile and place the proper value on it and protect it.
My wife asked for the grace to work on her flaws and shortcomings and promised she would be a better wife. You know what? She is.
You know what else? I have a packed bag in my truck as we speak and a plan in place that I can bail at any moment if the need arises.
She has been told, that at the slightest hint of infidelity, proof or no proof, I'm gone.
She has been told, that if there are any lies, about anything, I'm gone.
That is what gives me solace is that I know that I will be OK if there is anymore crap.
But at the same time, I committed to judging my wife based on the person that is in front of me now, how she acts now, how she treats me etc.
Your problem is not with the other guy....your wife committed these acts as a fully functioning adult. You can not absolve her of those responsibilities and paint her as the victim of him. To do so, takes away her agency in the choices that she made. It also takes away her agency in the choice she made to build a family with you.
That IS a choice she made.
It is also a choice YOU made to stay. You have your beautiful kids as a result of that choice. I don't think you regret that choice. I do however think you wonder if you made the best choice for you.
So my suggestion to you is to start looking at your wife and your life through the lens of what you have become and not what your were. Infidelity will always leave scars on the marriage and the spouses. But if you can find beauty in your marriage, you are entitled to enjoy that as well.