Some time ago, the Saturday Evening Post ran a humorous article that traced the tendency for marriage partners to drift from a height of bliss into the humdrum of routine attitudes. Called “The Seven Ages of the Married Cold,” the article likens the state of the marriage to the reaction of a husband to his wife’s colds during seven years of marriage.

The first year: “Sugar dumpling, I’m worried about my baby girl. You’ve got a bad sniffle and there’s no telling about these thi…