Was His Cheating Due To Emotional Disconnect?

I moved out of there, throwing away all that I had done to make our marriage and relationship work. I guess you could say, that after living a lie with this man and his cheating, I threw in the towel. Good riddance to a man who made a clear decision to step outside to find his comfort. I thought that maybe the other woman was skinnier than me, or perhaps was prettier. She was in fact heavier than me and was about the same in her looks as me. I never knew what it was that he wanted in her,and he never gave me any answers, but I just happened to be watching a tv program the other morning and they were talking about why men cheat. One reason that they listed was " emotional disconnect at home". I sat and pondered on this for awhile and wondered if this affected my husband and me in any way. I think that maybe it helped to contribute to our marriage failure. We talked about things alright, and in my mind, we got along fine....however, my husband is from another country and the woman he cheated with me with and moved in immediately with after my leaving was a woman who spoke the same language as he did. Maybe he had more of a connection with her? Whatever the reason, I know that I tried my best and am now moving on. I think that writing about things that bothered me with my ex really helps in my healing. And as far as this "emotional disconnect" I guess perhaps we stopped connecting emotionally?