""I've never found him attractive" "
This is a very loaded statement tho isn't it?
When women say "found him attractive" it could mean a million things. If we are talking purely and exclusively physical then generally speaking (although there are exceptions being women who put extra emphasis on being with someone "hot") women will tolerate less than perfect physical characteristics from men where women hold themselves (and other women) to a different, arguably higher standard (which is sometimes their own downfall as men then say "oh ok then, yes I did break up with you because you are not as hot as x next door or you are not as young as y down the road or z looks like the latest celebrity/sports influencer and I fancied them).
I do genuinely think that men cheat (when they do) almost entirely for sex/lust/physical reasons. They see a woman they find physically attractive and if there are literally no obstacles they often find it almost impossible to resist notwithstanding they are married or whatever especially if they think they will get away with it and there will be no consequences for them.
Its about sex and the physical body/face of the woman.
A statement like ""I've never found him attractive" " assumes a whole lot of factors around physical attractiveness which apply to women but not to men in today's society so the above statement is meaningless.
Added to which there must be a fair proportion of men who don't care too much whether their wives/girlfriend do or ever did find them attractive, just so long as they give sex and show a minimum level of willingness/enthusiasm.
Question - have you ever known a woman who, on the day they got married had said to their husband to be "I love you but if you put in 4 stone I am going to divorce you"?
I cannot imagine in the history of time any woman has ever said that to her husband to be whereas I imagine there have been more than a few men who have actually come out and said that to their bride to be before the wedding.