She's known for writing songs about her famous exes.
And now there's speculation a new song penned by Taylor Swift is about her recent break-up with Calvin Harris.
The singer has revealed that she has written country group Little Big Town's latest hit single 'Better Man'.
The song includes the lyrics: "I gave you my best and we both know you can't say that. We might still be in love, if you were a better man."
The singer took to Instagram last night to announce she had written 'Better Man' last night.
Taylor wrote:
"Feeling really honored that a band I've loved for so many years decided to record this song I wrote. Good luck at #cmaawards @littlebigtown!! Love you guys."
A photo posted by Taylor Swift (@taylorswift) on
Taylor and Calvin split back in May after dating for over a year.
Do you think the song is about Harris? Let us know here.