Swift may not have explicitly named Styles as her boyfriend to the public, but she hasn't shied away from referencing her relationship with him over the years. In 2015, the singer delivered a stunning performance of "Out of the Woods" during a a Grammys listening session and dived into the inspiration behind the song to the audience.
"The song itself, what I wrote, hearing this track, it just kind of conjured up all these feelings of anxiety that I had had in a relationship where everybody was watching, everybody was commenting on it," Swift said. "You're constantly just feeling like 'Are we out of the woods yet? What's the next thing going to be? What's the next hurdle? We're going to have to jump over it. Are we going to make it to next week?'"