Quote: The rest of the time the marriage was serviceable prior to the affair, and became awful after the affair. One partner has the affair, ruins the marriage, and then flees the wreckage.
Okay, I guess this is my way of looking at it...I think it is basically just setting forth the scenarios where people have affairs and end up leaving--one fourth of them had horrible M's the whole time, even w/o the affair while the others had decent M's prior to the affair, but after the affair they perceive it as horrible or stifling. It doesn't necessarily mean that person is going to bolt, that's an over-generalization IMHO.
I don't believe it is completely applicable to our sitchs
"Achieve success, but without vanity; Achieve success, but without aggression; Achieve success, but without gain; Achieve success, but without force." Lao Tzu