Why Do Some People Cheat?

This has been one of the hardest journeys that I have ever been on, and if you have ever been through infidelity, you know as well. What makes us choose that one special person to be with? How can we guarantee that we will choose a mate that will be faithful? Actually, there IS NO guarantee in life. What makes one man/woman want to be with others so much and others just not that kind of person? I never even thought about other men when I was married to my ex. I didn't care about whether other men were cute, handsome or good-looking. The only thing I wanted in life was to take care of the man that I had, and my children, to be a good wife and mother. Are we all just wired up so differently? What makes a partner want to cheat? Does that mean that the next man that I fall in love with will do the same thing to me? No, it doesn't. But then again, there's no way of knowing the future, as there are no guarantees in this life. All we can do is pray for the best.