SO this, in the end, is what love is.

Former Justice Sandra Day O'Connor's husband, suffering from Alzheimer's disease, has a romance with another woman, and the former justice is thrilled — even visits with the new couple while they hold hands on the porch swing — because it is a relief to see her husband of 55 years so content.

What culture tells us about love is generally young love. Songs and movies and literature show us the rapture and the betrayal, the breathlessness and the tears. The O'Connors' story, reported by the couple's son in an interview with a television station in Arizona, where Mr. O'Connor lives in an assisted-living center, opened a window onto what might be called, for comparison's sake, old love.