Hi, you need to inform his spouse IMO. She is living a lie and her health may be at risk.
Here's what my WH did after D-Day (although he trickle truthed me to death.)
Dumped AP on D-Day. His AP was also a co-worker but fortunately worked on the opposite coast.
Started looking for another job immediately. He understand he could no longer perform his responsibilities to the best of his ability, and there was no way I'd tolerate him ever visiting her site again, which he had to do about 3 times a year.
Gave me access to his phone AND his company phone AND his work emails.
I requested he provide me with his phone bills for several months prior to me discovering the A, he did so without much hesitation.
He pretty much stopped traveling (he generally traveled every other week). When he did travel, I accompanied him (and boy did I witness so many colleagues crossing boundaries).
Initially he placed some of the blame on me, I shut that down immediately.
Never ever got defensive even when I asked the same questions over and over and over.
Stopped socializing on the job when women were involved.
Never again did he have a one-on-one meeting with a female colleague.
Kept all female co-workers at a distance, cordial but always professional.
Gave up the sport he had been involved in since he was a child (37 years of his passion down the drain) to focus on the marriage and the family.
Read articles that I provided for him.
Found another job at about 8 months after D-Day. Held himself to the same standards in his new position.
He did trickle me to death and pretty much never started the conversations, but other than that he did everything I needed to feel safe. Took me years.
As an added note, the spouse of his AP, who also worked at the same company, found out about their emotional affair before it became physical. Confronted them both, they convinced him they would stop. Other BS forgot to send me the memo, and several weeks later his wife met my husband at his hotel. Had he informed me of what he found, my husband would never ever have traveled to her site.
I contacted the OW several times after D-Day. I threatened to tell her husband about the affair if she didn't. She knew I meant business, and she did tell him.
The point is he did pretty much everything I asked of him without complaint.
[This message edited by annb at 5:50 PM, Tuesday, January 31st]