So it's actually Calvin Harris who broke up with Taylor Swift, sources for Us Weekly revealed. The couple has earlier ended their relationship 15 months after they started dating.

While the "Shake it Off" songstress is "doing OK," the source said "she was [still] upset" after love affair simply died a natural death.

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"It just wasn't working anymore," another source for Us shared.

Their relationship was really in trouble even before Harris suffered an accident last May 20, but 26-year-old Swift still stayed beside him.

Taylor was really "worried" over the 32-year-old DJ's condition after his car crash in Las Vegas.

In fact, Calvin, who hails from Scotland, immediately called Taylor following the crash and she rushed over to see him.

"She's nursing him back to health. All Taylor wants is to be there for him," a source close to Taylor said.

The ex-pair first appeared together in the limelight in April 2015 after hitting it off at the 2015 Brit Awards. They even celebrated their first-year anniversary with a tropical holiday. They even took to social media their love for each other, sharing sweet photos of them together as they share a kiss in the sunset.

"I'm in a magical relationship right now," Swift said on the April 2016 issue of Vogue, calling their relationship "healthy" and "happy."

The last time the couple were seen together was on May 5 while driving together around L.A.

Swift was previously linked to Harry Styles, Jake Gyllenhaal, Joe Jonas and Taylor Lautner, while Harris dated Rita Ora. 

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