56. "Love Story" (2008)
Romeo meets Juliet: proof that star-crossed teen romances never go out of style. She's kept going back to the well of Shakespearean tragedy, referencing Julius Caesar in the "Look What You Made Me Do" video. It's never been clear what the line "I was a scarlet letter" is doing in this song, but now it's a hint that Tay was just a few years away from going full Hester Prynne in "New Romantics."
Best line: "Just say yes."