The song was engineered by Laura Sisk at Rough Customer Studio in Brooklyn Heights. It was mixed by Serban Ghenea at MixStar Studios in Virginia Beach, Virginia, and mastered by Randy Merrill at Sterling Sound Studios in New York. The inspiration for the song's lyrics came from a New Year's Eve party at Swift's residence in London. She said, "I was thinking about how everybody talks and thinks about who you kiss at midnight [...] But I think there's something even more romantic about who's gonna deal with you on New Year's Day. Who's willing to give you Advil and clean up the house? I think that states more of a permanence."
