An affair, is a symptom, its a crappy one, its a horrible one, but its also just another step in a pattern of things that usually happen in a an unhappy or unfulfilling marriage.
I respectfully disagree. And in good company. The late great Frank Pittman, among many other relationship counsellors, did not consider an affair, adultery, call it what you will, to be a symptom of the marriage but of an individual's unhappiness and their failure to deal with it. It is a poor and immature way of dealing with it to blame the marriage.
Blaming the marriage lets them off the hook. Let's not buy into it here please in a divorce busting site.
I am not saying we were perfect or that the relationship was.