A source confirmed to The New York Post's Page Six Monday that the couple have called it quits. Reps for the stars have not yet commented.
According to the reports, Swift, 23, and Styles, 18, decided to end their vacation together in Virgin Gorda, the third-largest of the British Virgin Islands, after a heated argument last week. Swift reportedly cut her trip short and headed home to Nashville to began rehearsing for her tour after the fight, but Styles continued his travels by visiting Richard Branson's home.
Swift was previously dating Robert F. Kennedy, Jr. and late Mary Kennedy's son Conor Kennedy, 18, but the couple called it quits in October. The country singer's other famous exes include John Mayer, Jake Gyllenhaal, Taylor Lautner and Joe Jonas.