Cheating - who's blamed?
You are in touch and have a wonderful relationship ... but suddenly you face something completely unexpected - adultery.
Do not panic or look for the guilt. This guy just was not for you. Continue ahead and, most importantly, do not imagine that the fault is yours or only your partner.
The relationship can easily be compared with teamwork. When something is wrong, all participants are guilty - some more, others less. Still, think, hardly anyone who is happy in a situation will go cheating, but he will hardly do it if he does the other well.
Everything is a matter of point of view, but there is certainly no way to burden one partner with all the guilt.
In such a situation, consider whether they could "correct" the relationship. If possible, act, but if you think the situation can be repeated, do not think to continue your way without this person. Accept defeat and look for happiness in other things - the world is full of wonderful moments
Do not be with someone just because "you can not without it". It may be difficult, and if it was your great love, it will remain a long time in your mind, but remember that if you do not respect and love your personality, you can not expect it from others.
In case of adultery, the first reaction is anger. Do not judge yourself. This can only harm you. Talk, analyze the situation and get to the exit, no matter what. No one can know what's going on in your head, so there's no way you can see what the other way around.
I agree with some of your statements, and disagree on others. Some people can roll with it easier I believe. For the MBTI folks I believe they are the thinkers, because its easier to rationalize their actions. For feelers it can cut deep to the core, in spite of the fact that both people have responsibility. Time to check out co-dependency, especially if your asking yourself the honest question: Am I the only thing in common with all of my failed relationships?