Jim,
I don't know how helpful this might be, but I did notice your single friend was 60 yrs old. Unless he is searching for love in all the young places, his would be partners are likely post menopausal, and a sex life may be of more importance to him than them (just saying).
He sounds like a good guy, because YOU are trying to get him the best treatment to help him. From most women's perspective, that trumps a roll in the hay any day.
Beth