Help... Is he crazy ?

I was in a relationship with a guy for almost a year, he later confessed to me that he was married. So I broke everything off. He wasted my time. I was so upset and pissed off because I had fallen for this silly person. Before he left I asked him when he cheats and goes home to his wife doesn’t he feel upset or sick, he looked at me like I was crazy and responded NO, it’s just a norm. He has only been married over a year, so he got with me just after his wedding. I could actually cry. Feel sorry for the woman.