Do Married Millennials Cheat on Each Other? Unmarried couples are more likely to cohabit than they were a decade ago, and the once-fringe online-dating scene has become as mainstream as dinner and a movie This article was featured in One Story to Read Today, a newsletter in which our editors recommend a single must-read from The Atlantic, Monday through Friday. Sign up for it here. Millennials have killed malls, cheese, and bar soap. Their thirst for blood unslaked, they’re now…