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Taylor Swift, Calvin Harris, Billboard Music Awards 2015

Kevin Winter/BMA2015/Getty Images for dcp

We love when Taylor Swift and Selena Gomez's friendship shows up front and center, so obvs, we were totally with the fact that they are each others' dates to the 2016 Grammy Awards...but, what happened to Calvin Harris?

The clear question in the back of everyone's mind was where T.Swift's beau is tonight, so we got down to it, and before you start freaking out—everything is fine between him and Taylor. It just so happens that the big music awards show fell on a night when he couldn't get away from the studio.

"He is working and in the studio," a source tells E! News exclusively. "Things are great between both of them. Taylor had plans on going with Selena for some time."

Calvin Harris, Snapchat

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In fact, Harris has also been sharing his time in the studio with fans through various Snapchats and on Twitter. "303 + les Paul custom in the lab," he wrote on Twitter with a photo of himself working over the weekend.

Meanwhile, Swift stunned on the Grammy red carpet in an incredibly sexy Atelier Versace outfit that flaunted major leg and her killer abs, while Gomez showed off her enviable figure in a blue cut-out gown. The 23-year-old pop star spoke to E!'s Ryan Seacrest while showing skin in the stunning, sleeveless, sparkling sapphire Calvin Klein gown and gushed about her bestie.

"Basically I wanted something that was simple and felt like what I would do if I was going on a date and this is what I would do and my date is Taylor Swift," Gomez said.

"No big deal just rolled up with the hottest date. @selenagomez #grammys," Swift said on Instagram.

Girls night for the Grammys? Why not?!

Taylor Swift, Selena Gomez, 2016 Grammy Awards, Candids

Jason Merritt/Getty Images for NARAS

Watch E! After Party: The 2016 Grammys at 11:30 p.m. ET / 8:30 p.m. PT. And don't miss the Fashion Police Grammy Awards special Tuesday at 8 p.m. only on E!