In my experience there are very few men who talk honestly and openly about their sexual life. Maybe that is why porn is so poular with men, maybe that is why porn is so tutted at by women. Maybe women have, through their discussion with other women they know what is normal and what is fantasy. I would never wish for women to stop discussing their lady stuff, it probably is a whole lot more meaningful than what men talk about (on the whole - I don't want a whole load of guys saying I was giving them a bad name - but they deserve it). But the discussion of relaionships is subjective and highly irrational. One person may not understand what another put up with, yet and ideal couple might be going through hell.
Maybe this is why he asked you for guidance about whether anything was up with your friend. Maybe your friend really does have a problem with sex.
So maybe there is a problem with your friend. Just maybe. She has stayed with this man to the point where he is a husband. Maybe subjectively he is a problem to her, but this isn't to say he's abnormal. Your question suggested he was.
The fondling may be a problem to you and to her, but, unless he knows about what is up he can't change it. As Smudge said.
Okay, maybe suggesting you were your friend was rude, but why are you talking about your friend?
But what do you want us to say? "Break up with him"? I have a feeling this is what you want us to to say.