Taylor and the famous DJ were coming out of Whole Foods Wednesday night -- wearing matching shirts no less --  when 2 people snapped the pics. 

This isn't the first time they've been together recently. Taylor went to Calvin's concert in Vegas earlier this month. There were reports he chartered a jet to fly her to the gig.

They got all flirty at the Brit Awards after-party in London back in February.

Shopping for food together ... hmmm.

Read more: http://www.tmz.com/2015/03/26/taylor-swift-dating-calvin-harris-together-photo-nashville/#ixzz3VWqpJGTt