Calvin Harris rants on Twitter vs Taylor Swift

Musician Calvin Harris took to Twitter his outburst on Wednesday after confirming that ex-girlfriend Taylor Swift indeed helped produce his new hit single “This is What You Came For.”

Harris verified on the micro blogging site the exclusive confirmation made by Swift’s representative to PEOPLE that the pop diva wrote the lyrics of “This is What You Came For” under the pseudonym Nils Sjoberg. He even praised Swift for being an “amazing lyric writer and she smashed it as usual.”

However, Harris said it was “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 32-year-old DJ and 26-year-old singer-songwriter broke up last June 1 after 15 months of dating. By June 15, Swift was photographed cuddling and kissing actor Tom Hiddleston in Rhode Island. Since then, the new couple have been inseparable. The pair have seen each other’s parents in Nashville and in London. They are currently in Australia where Hiddleston resumes shooting for the movie “Thor: Ragnarok.”

Harris has addressed Swift’s whirlwind romance with Hiddleston, saying “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.”

Harris undeniably addressed Swift when he said “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.” The DJ was apparently referring to the Swift-Perry fall out last year.

Harris ended his rant by urging Swift to “"Please focus on the positive aspects of your life because you've earned a great one.”