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Taylor Swift, Calvin Harris

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The dating speculation between Taylor Swift and Calvin Harris is in full force.

Swift and Harris have been seen mingling before, but this time it's a little different because they were spotted together at Whole Foods in Nashville. Yep, these two artists were grocery shopping together, and we all know that's not something you do with just anyone.

As if that alone wasn't enough, the pair were wearing matching outfits! Seriously! In a photo that surfaced on the Internet via a Calvin Harris fan-run Twitter account, Taylor and the EDM producer were snapped wearing a gray (or an olive green...the lighting isn't that great) top and black bottoms. Coincidence? We think not.

Furthermore, the 31-year-old deejay is currently touring (with a slated appearance for Lollapalooza in Brazil this weekend), but managed to make a pit stop in Nashville to see the singer. How sweet!

Now, to be fair, these two could just be working on music together. After all, inside sources at the 2015 Brit Awards reportedly claimed that the two artists "have a mutual respect for each other's work, and spent most of the evening talking about music."

Additionally, the source said that "Taylor is producing more dance music now and would love to write a track with Calvin."

Plus, Harris shockingly revealed during a radio interview with Capital Breakfast earlier this month that he would swipe left on Taylor if he came across her profile on Tinder.

"She's just the opposite of my type. She looks lovely, she's the opposite of my type, so I would just go left," he said, and later explained that he likes brunettes.

But he could have been lying to keep whatever is going on here on the down-low? Or maybe he changed his mind? Or maybe he really doesn't care for blonds and they're just friends?

What do you think is going on between Taylor Swift and Calvin Harris? Sound off in the comments below!

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