New rule: No one is allowed to tweet that a smarmy 68-year-old centrist bragging about bedding a twenty-something comes off as gross and embarrassing to anyone who isn’t also a smarmy 68-year-old centrist.

It’s not exactly a new phenomenon that older men who have enjoyed decades of sustained success in the entertainment industry naturally attract much younger, much better-looking women with their shining personalities and encyclopedic knowledge of the 1969 New York Mets. For whatever reason, attractive young women with their own aspirations in show business find cranky, gray-haired moguls who once entertained their fathers to be sexually irresistible. However, in recent years, the complicated gender politics of “age gap” relationships have increased social media scrutiny on such romances. But the arcane laws of attraction that Cupid uses to bring old rich men and young hot women together are nobody’s business besides that of the two consenting adults...