This sounds a lot like my husband although he's in denial this is the story that comes up practically every given chance

Sadly to say I am now the betrayed spouse from a one night stand. Never thought I would be here in this situation. My husband had a one night stand with a coworker who knew he was married and still pursued him anyways. Not saying my husband has no blame but drinking was involved, and he’s not a big drinker, so he got pretty wasted. The thing that bothers me the most is I asked him 1) to please keep this friendship strictly professional since she was confiding in him about her marriage problems. And he just kept telling me she’s just a friend, I have no reason to worry. But I didn’t trust her
2) That night was a work party and his coworkers were single, so they didn’t have to worry about going home to their spouses....they wanted to stay out
Needless to say this is a perfect example of poor boundaries and pride...because he never wanted to cheat on me. He is extremely remorseful and ashamed of what he did...and says the alcohol affected his judgement. There was even a moment when before he was intoxicated she went up to him asking him if he was interested and he straight out told her no. He’s married. But the more he drank the more she kept coming on to him. I wish he would’ve just left but he was so adamant that he would never do anything like that....I have no choice but to believe him if I want to make my marriage work. But doubt gets in my head about whether he’s telling me the truth. Maybe he did want too...but he reassures me nothing was going on at work. I looked through his phone records and there was no late night texts or phone calls to this individual. He even left his job so we can work on our marriage. It’s been 4 months and it’s still hard but I’m praying that it does get easier.

I found out my husband had cheated on me twice before we got married. Same girl. He was drinking a lot for a while. he got wasted at the bar after work with some coworkers and ended up having sex with a girl in his car. A couple weeks later her did it again. He had been prideful the first time thinking nothing would happen. Then he thought it would never happen again.
One of the worst things is that he introduced me to her at his work later. He encouraged a friendship, and we developed one. She spent time around us and our children. She had been invited to our wedding but didn’t come. Shortly after we were married, she messaged me confessing what had happened.
Instantly after me finding out my husband admitted that he was an alcoholic and quit drinking all together. He admitted himself to the hospital for his severe depression and OCD that he hadn’t been dealing with. I had been wanting him to get professional help for so long and he finally was. I had been fearful of him committing suicide for so long, and it was a relief to know that he was finally getting treatment. My husband is a sweet man. Extremely attentive and gentle. He worships me and makes me feel loved. He is also extremely broken in his soul. I know that that is why this happened.
It doesn’t change the fact though that I feel completely and utterly betrayed. I’m so fearful that there was more to it that what he has told me. The girl was really a sociopath. She enjoyed telling me and had just been waiting to do so. My husband says he encouraged a friendship with her hoping that that would keep her from telling me. He knew she was a loose screw. But then why allow her to be around our family? Just to protect himself?
My big fear is that the actions that have come to light do not line up with who I know my husband to be. What if I am just blind? What if he is not who I thought? What if this happens again?
I am working on things, and we are still together. He has been patient with my brokenness, remorseful, and willing to answer all my questions. He has been sticking to his new treatment plan, sticking to an extremely structured sleep schedule, and taking care of our kids better than ever. He is doing everything right to fix this.
But I just can’t let go. I just can’t forgive him or trust him. Actually, a part of me is almost angry that he has his stuff all together now, and I’m a broken mess.

My wife had two drunken one night stands, one 11 years ago and the second one 6 years ago. She told me about it 1.5 years ago. She is now sober AA etc... she’s been sober for 2 years now with zero intention of drinking, she is now what I wanted our entire relationship. Here is the issue, I cannot get over it and every day it gets worse. She did it at her best friends wedding with her brother. She claims she doesn’t remember a thing, she was blacked out, but somehow she’s sure it happened, but won’t contact him to make sure, even tho the doubt is truly killing me. I can’t eat, I can’t be present to my 3 girls, I am worse than I’ve even been. I don’t want to leave my family but I can’t live with this horrible pain anymore. I’m in heavy therapy, 6 hours a week. It’s actually only making it worse.