You hit so many topics here, I am going to struggle to get all of them but I will try. What sucks about cheating, at least defining it, is that it it’s definitions are a vast as there are types of relationships.
I think one of the problems that really causes a majority of infidelity situations, I am not a marriage counselor nor a psychologist so I am probably full up shit, is that people enter committed relationships with wildly different goals. Now, they should have different goal, but the problem lies in that those goals and expectations have not been communicated to the other. In saying that, as you spoke of, needs do not get met. People stray, sometimes physically, but way more often emotionally, which in my humble opinion is in someways more damaging.
Another thing you hit on is the need for therapy. Every relationship need constant maintenance, and the ability to be open. Two often, we believe open an honest dialogue is a sign of a weakening, especially if we need help to get there. I mean, in reality, we have decided to open a business with a person based and physical and emotional feelings over the period of a couple months or years. Heck, we sometimes put more due diligence into the reviews of where we buy tires for our car. If you think your relationship doesn’t need work, then it probably needs more work than everyone else’s.
RE: Promiscuity Over Monogamy – Diving Into Cheating Culture