This didn't happen in a marraige, but I was in a relationship that I was really trying to make work. Then I was texting with a male friend and the texts got.....sexy. My friend told me it was emotional cheating, so I stopped the texts. A few months later, they started up again. I was geting something from these texts and from this other man that I wasn't getting in my relationship. I ended the relationship. Not for the other man, but because I realized it wasn't a healthy relationship if I was seeking gratification from another, even just through texts. It was a catalyst of sorts. I'm not the cheating type, so for me to have gotten that close to making those texts a reality, meant I needed to leave the relationship.