I've noticed that a lot of women who become OWs have dad issues.
I think its women who have dad issues that end up having relationship issues derived from some sort of craving for male attention. Speaking from experience, and observing others. Not sure of the deeper "why" behind it though.
I had a tumultuous relationship with my dad, it was violent at times. I was also in an emotionally and physically abusive relationship with a boyfriend during my teenage years. These two, along with other things, lead me to firmly believe I was worthless, unlovable.
I've not looked at these things in relation to my A yet but I'm sure they're important.
From a family of six, my oldest brother and sister are divorced and I am not positive if cheating was a factor in either case but knowing my brother and BIL, I would not doubt that it was the case. I'm almost sure my twin brother cheated on his first common law relationship, positive that he cheated on his second wife and for sure, he cheated on his third one. My younger sister ended up having a PA on the man who she had a EA with when she was married. My younger brothers wife cheated on him. And of course, I'm guilty of my own EA.
On LFs side of the family, I'm only aware of one older brother who had an affair, in fact, it could be a case of RA too. Not sure about the other 3 siblings. Her parents were also married 50 years with no hint of cheating.
So, if FOO issues are an predetermination indicator, then I feel sorry for my children.