Taylor Swift is one of the most influential and famous women in the music industry.
Swift was criticised strongly for being a cradle snatcher regarding her whirlwind summer romance with 18-year-old Conor Kennedy.
Four years his senior, sources say they broke up because she came on too strong, and was obsessed with dating a member of the Kennedy family rather than Conor himself.
In 2014 TMZ shared a video of Taylor and Victoria's Secret model Karlie Kloss at a concert, where they were reported to have shared a kiss.
For years while we've been belting out Taylor Swift's eerily-similar-to-our-own-life breakup anthems to get over the average Joe's we've dated, the country crooner turned pop star has successfully dated a slew of Hollywood heartthrobs.
Both deny the rumours that they were an item on the promotional circuit for their movie "The Lorax".
Efron doesn't feature in any of the songs on "Red", but the duo did write a song denying that they were dating on the The Ellen De Generes Show in a parody of Foster the People's "Pumped Up Kicks".
Swift met Calvin Harris through mutual friend, Ellie Goulding, at the Brit Awards in February of 2015.
Sparks flew, and Harris became one of her longest relationships.
Songs "Last Kiss" and "Forever and Always" expressed her scathing opinions of the relationship.