What should I do if he cheats?

What should I do if he cheats?

Well, clearly you leave him right? Isn't that what every woman does? The answer to that is no, not every woman leaves. Let's talk about why:
Women are emotional creatures, so THEY say. I don't want to generalize though, so let's just say that most women are emotional creatures. We tend to fall in love deeply, and most of the time, we fall in love with people who don't deserve it. In this case: Cheaters.
So what should you do if he cheats?