The 26-year-old star attended the awards ceremony with pal Abi Anderson.
Taylor Swift was reportedly furious with Calvin Harris after he opted against accompanying her to this year’s Grammy Awards.
The Blank Space hitmaker attended the awards ceremony without her then-boyfriend in February, who instead opted to spend the evening working in the studio, and Taylor was apparently left feeling let down by the DJ.
A source explained to The Sun newspaper : “Taylor was furious and hated the way he never wanted to attend award shows and big music industry events with her.
“It was a Sunday night in LA and she felt he could have slipped away for a couple of hours to be with her.”
Meanwhile, sources close to Calvin have also suggested Taylor was moving in on her new boyfriend Tom Hiddleston while the DJ was in hospital following a car crash.
In May, Calvin was rushed to a medical centre in Los Angeles to receive treatment for injuries he sustained in the crash.
A Swift source confirmed Taylor and Tom met on May 1st at a Met Ball dinner at Anna Wintour’s home in New York City and not in February.
The singer subsequently flew from her home in Nashville to visit Calvin the next day, but she ultimately spent just one day by his side, despite the severity of his injuries.