Finding the first item on our list is easy since, sure, it is John Mayer. Mayer reportedly didn't realise Swift penned it, and he felt "humiliated," as he said to Rolling Stone in 2012.
While the song is somewhat about the short-lived Taylor Swift and Joe Jonas romance (which lasted from, it seems to be more about Camilla Belle, an actress that Tay-tay supposedly targeted for dating Jonas immediately after their breakup.
Taylor's breakthrough song, which won over romantics and country music fans worldwide, was motivated by her relationship with Andrew Hardwick, a classmate.
This Red song features lyrics about a scarf Taylor left at Jake Gyllenhaal’s sister Maggie’s home. The scarf strikes again.
What it's about—picking yourself up after a bad breakup and giving it a shot with a new flame—is obvious from the title.
Back to December is very different from her ex-inspired songs, which tend to make fun of the guys who provided the inspiration.
Despite frequent dating rumours in the summer of 2010, the late "Glee" star technically does not count among Swift's ex-boyfriends because the two parties never officially confirmed their relationship.
The lyrics to the upcoming Harry Styles-inspired hit are "trouble, trouble, trouble." According to rumors, this song was composed during one of their numerous breakups.
When this song first came out, it was difficult because Mayer, Lautner, and Jonas were all the subject of rumours. Taylor was never able to confirm if it was the "Donnie Darko" actor, but other sources have managed to pin the culprit.
If the name isn't yet evident, perhaps the James Dean resemblances would suggest a well-known ex-lover.