Calvin Harris launches Twitter tirade against ex Taylor Swift

CALVIN Harris has hit out at his ex-girlfriend Taylor Swift after it was confirmed that she did write his latest hit.

The Scottish DJ posted a string of messages on Twitter, saying Swift's behaviour was "hurtful" and alluding to her new romance with Tom Hiddleston after Swift's camp said she penned Harris and Rihanna's track This Is What You Came For.

Her spokesperson said: "Taylor Swift wrote This Is What You Came For under the pseudonym Nils Sjoberg."

Harris - who split from Swift in May - shared a link to a US article about Swift writing the song and tweeted: "And she sings on a little bit of it too. Amazing lyric writer and she smashed it as usual."

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Harris went on: "I wrote the music, produced the song, arranged it and cut the vocals though.

"And initially she wanted it kept secret, hence the pseudonym."

A third tweet said: "Hurtful to me at this point that her and her team would go so far out of their way to try and make ME look bad at this stage though."

The star then referenced Swift's new relationship with actor Hiddleston.

"I figure if you're happy in your new relationship you should focus on that instead of trying to tear your ex bf down for something to do," he said.

Harris, 32, also referred to Swift's rumoured feud with pop star Katy Perry, tweeting: "I know you're off tour and you need someone new to try and bury like Katy ETC but I'm not that guy, sorry. I won't allow it.

"Please focus on the positive aspects of YOUR life because you've earned a great one."

The star concluded his rant by tweeting: "God bless everyone have a beautiful day."

Swift, 26, and Harris dated for 15 months before parting company in late May.

The Shake It Off singer started dating Hiddleston weeks after the break up.