As mentioned in my first, my posts on this thread are for other contributors and lurkers, just in case anyone was questioning the validity of engaging with such aggressive and personalised obtuseness
Argument is not aggression. You're the one making personal attacks, so far according to you I am goady and obtuse (plus a host of PA sideswipes).
I think you just don't like people questioning the validity of your views and reasoning, especially with your proposition is that no affairs stem from problems in a relationship, not ever, and any other view is a myth.
But to believe this requires believing a host of obviously false resulting conclusions. It requires the most extraordinarily partisan reading of research, the most blinkered observation possible of peoples' relationships and testimony, and some extremely tortuous mangling of logic, cause and effect, and statistics.
So where, exactly, is any myth more likely to be?
So why would anyone hold to this view given it's probably false. What is now clear to me, parsing your fairly circuitous reasoning, is that the main benefit of this view is that it maintains that an affair is always other peoples' fault.
But it's a dangerous myth, as it flies in the face of all observable evidence, so believers have to continually adjust reality to fit the required worldview. IMO anyone who believes it cannot find their truth and move on, but have to stay in a false limbo because of the conflict between belief and reality.
The only healthy view IMO is a rational view, that fits all research, observations, testimonies, and doesn't disobey the rules of logic and mathematics. This is that Some affairs are due to problems in the relationship, Some affairs are due to the proclivity of the cheater (and Some affairs are probably due to a whole host of other obscure causes). Some are due to a cocktail of causes.
And also accept that there is variability in the degree of fault, humans being what they are, nothing is set in stone, every relationship is different.
in my view this approach is a far healthier place to be to move forward.