Taylor Swift reveals her hit song I Knew You Were Trouble was written about ex-boyfriend Harry Styles

Speculation had been rife that Taylor had penned the song about the One Direction star, but the star confirmed the rumours were true in an interview with The Sunday Times magazine.

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Taylor Swift admits she wrote I Knew You Were Trouble about Harry Styles: ohnotheydidnt — LiveJournal - Page 2

Taylor Swift reveals hit song I Knew You Were Trouble IS about Harry Styles - OK! Magazine

Taylor Swift admits she wrote Trouble about Harry Styles in a new interview - Mirror Online