Sex File: He wants to have sex all the time, is his libido normal for a man in his 60s?

Many women your age would gladly trade places with you.
You are correct. Men's and women's sex drives tend to slow down with age, so for a man in his 60s, your partner has an unusually high libido. In the full version of your letter, you mention that you are certain he isn't taking Viagra or any other drugs for erectile dysfunction. This aspect is less unusual than you might imagine, given that research by the US pharmacy chain CVS suggests that men over 60 account for only about a third of Viagra sales.