Following the release of "Fearless (Taylor's Version)" in April 2021, Turner supported the record on Instagram by sharing a screenshot of her listening to Swift's "Mr. Perfectly Fine." The song was one of the album's "from the vault" tracks that wasn't on Swift's original 2008 album. Since Swift and Jonas briefly dated the same year "Fearless" dropped, fans theorised that "Mr. Perfectly Fine" was about her relationship with the Disney alum.
Turner fuelled the rumours on her Instagram Story. "It's not NOT a bop," she wrote about the track. After seeing her message, Swift reposted Turner's comment on her own Story and then praised the actor, writing, "Forever bending the knee to the 👑 of the north."