Did Taylor Swift write and sing the song i knew you were trouble and we are never ever getting back together about Harry Styles?

Answer 1

I Knew You Were Trouble and We Are Never Ever Getting Back Together were written before she was dating Harry. But in previous performances of both songs she has mocked Harry.

I Knew You Were Trouble At The BRITS: When she said the line "Me Or Her" upon saying her she pointed at Caroline Flack a ex-crusher of Harry Styles.

We Are Never Ever Getting Back Together At The Grammy's (Harry wasn't even attending The Grammy's): Upon saying the line "So he calls me up and he like "I still love you" Is always said in a normal American accent but when she says "I still love you" She says it in a British accent.

Both Performances were aimed to mock Harry.

Hope this helps!