I have some running and gym friends who are into their 80s and when I've talked about
the aftereffects of this adventure they tell me that, based on their experience, those things were going to diminish anyway.
Another poster recommended this book on another thread which I just received. It's worth a look.
/www.amazon.com/Intimacy-Impotence-Couples-Prostate-Disease/dp/0738207896