You've got to put the fear-o-god in that wayward man by punishing him with nuthin less than the thunderbolts of Zeus.
Thats to say----> shock the hell out of him.Train him like Pavlov's dog. Whenever you catch him eyeing a guy with that lewd gleem, you zap him repeatedly. Then you have lovely wholesome ladies immediately come afterward to coddle him.
Eventually when you have it so that he starts cringing whenever mr. universes walk by in their speedos, you have the lovely ladies up their coddling to snuggling...of course we can't have anything beyond that cuz we're good christians.