To be able to play their latest hit song on the Ed Sullivan Show in 1967, The Rolling Stones had to agree to change its words from the far too dirty Let’s Spend the Night Together to Let’s Spend Some Time Together. Mick Jagger rolled his eyes as he sang the new lyrics, but maybe Ed Sullivan was merely foretelling the future (or at least failing to make the song any less suggestive). It turns out that a lot of couples spend some time together and then spend the night apart. “Snoring and conflicting schedules are top reasons couples decide to sleep in separate bedrooms. Sex therapists and marriage counselors have their doubts about the arrangement.” NYT (Free Article): I Love You, but I Don’t Want to Sleep With You. (I heard some version of that line about a thousand times in college.)