Taylor Swift has been known to mix work and play -- at least in her songwriting. Now, she is supposedly taking it up a notch, as she is reportedly dating British singer-songwriter Ed Sheeran, who is also her Red Tour opener and her collaborator on 'Everything Has Changed.' Is Taylor Swift dating Ed Sheeran? Could this be the beginning of 'Ted'?

E! reports that Swift and Sheeran spent Feb. 19 together, which was the night before the BRIT Awards. Perhaps they were hanging out and writing music? Or maybe it was more.

It's also been rumored that the talented twosome dated last spring, but it didn't last, even though a source said "they have a great chemistry together."

Swift did refer to Sheeran as one of her "favorite human beings on the planet" when she tweeted to him on his birthday last month, so there is definitely an affection and fondness there -- but it could be platonic.

A relationship between the two would be a bit dicey, since Sheeran has written with and is friends with Swift's latest high-profile ex, One Direction's Harry Styles, which means he'd be in violation of the bro code. Sheeran has said that he and Swift are "good friends," but that could just be a cover.

"If you look at all the dudes she’s dated, they’re all tall, brown hair, brown eyes, very attractive and all the girls scream for them. I’m chubby, ginger with blue eyes," he claims. However, Swift was quoted as saying that she like redheads, too.

Even if things are nascent now, they could develop on the Red Tour, which launches on March 13.