Have always known
Last infidelity approximately 28 years ago
FWW wife ended it" to work on my marriage"
The last 28 years have been good
Last8 to 10 best ever
In my heart I had forgiven her years ago
What did you really know?
Suspecting is not knowing, suspicion is not confirmation, and if that is all you had you were unable to process the marital relationship issues properly.
My FWS confessed, only when it became apparent to both of us that I was on the verge of leaving. I wasn't even planning on divorce, but just moving out to another nearby city and working and living separately, near enough to help with kids, but far enough to not have to cross paths with someone who was not present for me. After 18 years of marriage, I had run out of ideas, was done trying to figure it out. Some would have thought our marriage was fine, but emotional and physical intimacy was severely impaired, despite my absolute best efforts. I had come to the conclusion that I was unwanted. Truth was, my FWS was being torn apart by her guilt that was worsening every year. The lies of 9 years before kept requiring more and more lies over the years.
You can't really work on what you don't really know.
Marriage cannot flourish with secrecy.
As for telling the kids? We didn't, but 8 years later, with 4 adult children, I discovered that at least 3 of them had been talking about it. All of my kids had met the AP, my oldest daughter, only seven years old when the affair happened, recognized as she got older what her mom had actually been doing when had taken the guy back to the bedroom and locked the door. One of my kids was VERY distressed by this discussion and spoke to me.
I then told my FWS, who had a discussion with all the children.