"For years, I was never sure if we were friends or not," Swift told Rolling Stone. "She would come up to me at awards shows and say something and walk away, and I would think, 'Are we friends, or did she just give me the harshest insult of my life?'" In Swift's telling, the act of betrayal was all about business. "She did something so horrible," she said. "I was like, 'Oh, we're just straight-up enemies."
Based on clues in the Rolling Stone piece, fans and bloggers quickly put the pieces together and realized Swift was referring to Perry -- specifically a kerfuffle involving dancers Lockhart Brownlie, Scott Myrick, and Leah Adler. The three were originally on Perry's California Dreams tour before joining Swift's world tour in support of Red. As TMZ reported at the time, they allegedly gave Swift a 30-day notice to let her know they would be leaving her tour early to rejoin another leg of Perry's tour, but they were fired on the spot. "She basically tried to sabotage an entire arena tour," Swift told Rolling Stone. "So now I have to avoid her. It's awkward, and I don't like it."