I'm not trying to agree.
I was correcting some misconceptions and giving you some more insight.
Oh, BTW, I actually edited my post in the meanwhile and added something at the bottom.
EDIT: Meh, I'm taking it out and putting it here.
I see that your way of thinking comes from a mediocrity and a scarcity mentality.
If you can be "hurt" by somebody cheating on you, then you are emotionally dependent on that person. You don't love yourself enough for it to be enough so you "need" the love of another human being in order to fill a non-existent void.
When you get to the point where cheating does not hurt and maybe that you don't even get angry, but you are disappointed in that person for abusing your trust like that, then you're doing it right.
It comes back to the huge difference between being alone and being lonely.