actually, based on the first anecdote in the story, it might also be the case that men are experiencing sexual problems because they have no relationship or no substantial interest in the women they're having sex with. They're agreeing to have sex because they think they'd be nuts not to accept a woman who propositions them, but they just might not be that attracted to her.

In other words, he's just not that into her.

This is a problem that folks tend to underestimate - they assume that all guys need is a naked body next to them and they're raring to go. But actually men can lose responsiveness if they don't have a real interest in their partners.

oh, i am SUCH A BIG SEX NERD.