Could it be true that a married man has only been with 3 women his whole life if he then cheats?

Yes it can be true and I know 3 of these guys. Not all men chase women like alley cats on a hot summer night and try to bed everyone that moves. Some men are shy, some care enough to meet the right girl and some men are old fashioned about dating. Sure nothing wrong with that and in todays boring modern world it's all rather refreshing. Many people don't cheat on purpose. Things happen in their lives or in their marriage and each story is different. Even if the wife is a good wife or a husband is a good husband, sometimes one of the two can get bored especially when they start reaching around 40 because they are still young enough to change their life, but rolling down the hill at top speed towards old age. So, they are really looking for their youth and will often have an affair with someone younger than themselves. Still, it doesn't make it right.