Taylor Swift has been having a ridiculously awesome year, with a gargantuan world tour (featuring too many guests to count), a slew of Grammy nominations, and so much more. Beyond all that, though, her relationships lately have been front and center. During her time in the spotlight, she's made great friends and "straight-up enemies," and she's had her heart broken more than once. We've already launched in-depth explorations of how much her look has changed and who all of her songs are about, but now we're broadening the scope. Keep reading for a refresh on Taylor Swift's most high-profile relationships over the course of the past decade, from feuds to friendships and beyond.