Why are you acting as though Americans are the only ones plagued by infidelity? And where are you getting the idea that in countries other than the U.S., adultery is no big deal. I don't think that's true at ALL. Adultury is an issue the whole world over, and unless you prove otherwise, I find it extremely difficult to believe that in other countries people would consider adultery to be a non-issue.

And I'm seriously boggled that you're suggesting that the person who was cheated on should somehow blame themselves rather than their partner who cheated.

If you want to sleep around with other people, don't get into a committed, monogamous relationship. I mean, this isn't a hard concept to understand. If you're in a monogamous relationship, cheating on your partner is a douchebag thing to do. If you're seriously itching to get it on with someone else, then either convince your partner to be in an open relationship, or break up with your partner before going after other people. SIMPLE.

Cheating is rarely just the physical act alone. It requires deception, lying to someone you claim to love, breaking trust, and completely dishonoring the relationship. If that's not "bad" then I don't know what is.