It may have taken a little while to reveal itself, but it appears that Calvin Harris and ex-girlfriend Taylor Swift actually do have a little bad blood after the demise of their relationship.

People published news Wednesday morning that, as long-rumored, Swift was a co-writer on “This Is What You Came For,” Harris’ hit song with Rihanna, information confirmed by Swift’s publicists.

Further, TMZ alleges that it was the song itself that caused the couple to break up. During the promotion of the song, Harris did an interview with Ryan Seacrest and was asked whether or not he could foresee ever collaborating with his then-girlfriend.

“You know, we haven't even spoken about it. I can't see it happening, though,” Harris said, words that apparently hurt Swift, given their secret collaboration.

With all that in mind, Harris took to Twitter himself to confirm, clarify and question some aspects of Swift’s choice to out herself as being involved with the song.

Things start harmlessly enough, with Harris being quite complimentary of Swift’s lyrical skills, as he links to the original People story that broke the news of their collaboration.

https://twitter.com/CalvinHarris/status/753256456711843840

Harris then goes on to clarify his own involvement with the song, regarding the music and production, as well as stating that the secrecy involved was Swift’s choice.

https://twitter.com/CalvinHarris/status/753257779775668224

Then things start to get fun.

Harris is clearly hurt by Swift’s choice to out herself in such a way as to make Harris look like the bad guy, before going full “Kermit drinking tea” shady and suggesting that if Swift were happy in her new relationship, she wouldn’t have so much time to try to tear Harris down.

https://twitter.com/CalvinHarris/status/753258935432294400

https://twitter.com/CalvinHarris/status/753259239863296000

Harris goes on to further make his point by invoking the name of Katy Perry, which is the point at which you realize he is not playing around.

In a 2014 interview with Rolling Stone, before the release of “1989,” Swift said the song was about another female artist, whom she declined to name.

“For years, I was never sure if we were friends or not,” Swift told the magazine. “She would come up to me at awards shows and say something and walk away, and I would think, 'Are we friends, or did she just give me the harshest insult of my life?’”

Swift went on to say that the other artist then did something so horrible that it left Swift saying, “Oh, we’re just straight up enemies.”

“She basically tried to sabotage an entire arena tour. She tried to hire a bunch of people out from under me. And I'm surprisingly nonconfrontational – you would not believe how much I hate conflict. So now I have to avoid her. It's awkward, and I don't like it,” Swift said.

This is all (kind of) relevant in light of a 2013 Examiner interview of a backup dancer for both Swift and Perry, who detailed leaving Swift’s tour early with two friends to return to Perry’s entourage.

https://twitter.com/CalvinHarris/status/753259873035399168

As for Perry she appears to have weighed in on the matter via her own meticulously chosen reaction gif.

https://twitter.com/katyperry/status/753297289230241792

After that, Harris was all sunshine and light, suggesting that Swift focus on all of the great things in her life because she’s earned them, before going on to wish everyone a beautiful day.

https://twitter.com/CalvinHarris/status/753260609970417664

https://twitter.com/CalvinHarris/status/753261674145067008

With such delightful social media entertainment, how could anyone not have a good day?

libby.hill@latimes.com

Twitter: @midwestspitfire

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UPDATES:

11:50 a.m.: This article was updated with Katy Perry’s Twitter reaction.

This article was originally published at 10:36 a.m.