@ Texas Lynn
I'll speak from my experience nearly becoming the "other guy". I met this guy I really liked, he was sweet and cute. We hit it off but when it was starting to get heavy, I realized that he was married. He was lonely and felt trapped in his marriage. It turned out that his wife was on some sort of depression medication which killed her sex appetite which only served to intensify his latent gay tendencies. At that point I had two choices, stop it right there or go all the way. After some reflecting, I decided I didn't want to be that "other guy" nor was I going to help him sleep around behind his wife's back. It wasn't exactly an easy decision, I was strongly attracted to him and well, the idea was exciting. But when I imagined being in the wife's shoes if she found out, I found my answer. So I ended it on the spot. I still think about him sometimes, the world would be a lot easier if more people were true to themselves.