All the lonely Starbucks lovers helped.
Acyally, I wasn't familiar with the song -- that's how far from being a Swiftie I am -- and with just the entry SPACE, I thought it was going to be about one person in the relationship "wanting some space," as they say. But that's another song, one by Christine Lavin: "If you want space, go to Utah." Oh well, the puzzle had the perfect meshing of mechanism, title, and answer.