Taylor Swift didn't waste any time writing a song about her break-up with One Direction's Harry Styles, with a friend of the singer's revealing that the song is already finished.
The pair, who began dating in November last year, called off their romance earlier this month, with Taylor believed to have "been working on a song about her split from Harry since they broke up."
A gossipmonger source close to Taylor blabbed to the UK's Sun newspaper, revealing that the 22-year-old 'I Knew You Were Trouble' singer uses a relationship "memory box" for inspiration when writing her lyrics (complete with curly-haired singer references and all).
"Her main source of material for the songs she's written about her string of other famous ex-boyfriends comes from rooting around in a trunk where she hoards keepsakes of their relationships.
"Photos of Harry are now in there, along with a chain he had made for her when they got together last year which matches his own favourite necklace of a paper plane.
"Trinkets like that should provide some easy material for her to build a song out of."
Right after her split from the 18-year-old heartthrob, Taylor was spotted at her recording studio on January 10, tweeting: "Back in the studio. Uh oh..."
YOUR SAY: Do you think Taylor should release the song or keep her relationships with her celebrity boyfriends private?
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Related video: Taylor Swift and Harry Styles NYE kiss.