My husband is sick and impotent. I’m in my 50s and miss sex

He doesn’t want to talk about it and, most nights, sleeps as soon as his head hits the pillow. I’m in my late 50s and, while my sex drive is not what it once was, I miss the intimacy and buzz.
Being unable to maintain, or achieve, an erection is the most worrying sexual problem for a man. Impotence is the old-fashioned term, but it accurately describes the feelings such failure produces.