Taylor Swift's hit single I Knew You Were Trouble was reportedly inspired by her first experience of romance with One Direction star, Harry Styles.
According to Radar Online, Swift - who is thought to have dated Hazza before making up, then breaking up with him earlier this year - allegedly penned the song after seeing images of him kissing 18-year-old model Emma Ostilly in New Zealand.
A source told the website: "Taylor was crushed over Harry the first time they dated, and like she always does, she penned a song about him to deal with her broken heart.
"I Knew You Were Trouble is one hundred percent about Harry. She knew he was young and popular with the ladies and wasn’t ready for a serious relationship, but somehow hoped she could make it work."
They added: "She was head over heels for Harry so even though she knew he was bad news for her, she gave him another chance.
"Harry pretty much knows the song is about him but doesn’t really care. He’s just happy to be single again."
Despite the rumours, Taylor is yet to confirm what or who I Knew You Were Trouble is about.
Meanwhile, Styles - who is set to perform alongside Swift at The Brit Awards tonight - recently called her a "sweet girl" when speaking about their break up.
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