Why does my married male friend keep talking to other women?

My male best friend who's a brother/family to me has been married for two years now. He's a really good guy and I get along with his wife pretty well too and was very happy for them when they got married. But they're going through a really tough patch.

The thing is my friend has a history of talking to other women, he's done this when they were dating and been doing it while he's married too to the point where his wife is really confused about the future of their marriage. I know for a fact he never cheated but talking to other women is not right either.

This situation has been going on for the past three months and when he confided in me what was going on I always felt that there was something more to the story that he wasn't telling. I finally asked him do you know what triggered all these uncertainties is her she's always been head over heels about you and he tells me that a few months ago she found him texting other women and at that time she confronted him and eventually swept it under the rug but in reality she never got over it until now.

in my opinion my friend is absolutely wrong and his wife has all the right to feel the way she feels. He's heartbroken with the situation but why does he keep breaking her trust like this when they're married? Why does he feel the need to talk to other women? What are his motivations?

Why does my married male friend keep talking to other women?
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