I've had 4 marriages and several other committed relationships. While they may have failed for different reasons, I never cheated. Like the author, I do take pride in that. But it is not because I have some superior morals about infidelity. It is because to cheat you have to lie and carry around that lie forever, and I have never been able to lie without getting caught. So it's just not worth it. I guess I would be called a serial monogamist.