Taylor Lautner celebrated the release of his ex-girlfriend Taylor Swift's new concert film "The Eras Tour" by performing acrobatic moves in a cinema. The film features footage of her last concert tour performing songs from her 10 albums. Lautner and Swift were in a relationship from 2009, which ended before Swift wrote "Back to December," a song about wanting to go back to an ex. Despite Lautner marrying someone else, their friendship remained strong, and he even appeared in the music video for Swift's "I Can See You."