Another one bites the dust ... Taylor Swift's relationship with Harry Styles is over!

Life & Style reports that the couple -- affectionately known as Haylor -- has officially called it quits after just two months.

A source tells the mag, "They are both really busy and never in one place for long. Harry's really upset about the split and is really sensitive about it." The source added, "Loads of his friends told him to be careful and that it was never going to last, and he feels a little foolish now that it's fallen apart so quickly."

The country crooner and One Direction member were seen kissing in Times Square on New Year's Eve, and even posed with fans on the British Virgin Island of Virgin Gorda on Jan. 1 -- but then things reportedly fell apart on their vacation and TSwift jetted back home on Jan. 4.

The break-up news happened to come out the same day as the new One Direction video for "Kiss You." Coincidence? Taylor and Conor Kennedy's split was announced the same week her new album "Red" was released. We're just sayin.'

With the split, Taylor's exes mount up to ... oh man, who can keep track? Let's just say there's been a lot. Click "Launch Gallery" above to see more of TSwift's former flames!

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