People.com — "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 tweeted Wednesday more info

NME — Harris confirms the news but isn't happy about it more info

Time — She used the pseudonym Nils Sjoberg more info

ET Online — The 26-year-old pop star used a fake name in the credits, her rep confirms to ET. more info

The Mirror — The superstar penned This Is What You Came For before their relationship came to an end more info

TMZ — Calvin Harris is taking the gloves off and lighting up Taylor Swift over his/her hit song, "This Is What You Came For." Calvin reacted to TMZ's story -- that Taylor wrote the lyrics and recorded a demo of the song, which Calvin used to produce… ... more info

MSN Music — The "Shake It Off" singer wrote the smash hit under the pseudonym Nils Sjoberg, PEOPLE confirms more info

Rolling Stone — Taylor Swift wrote Calvin Harris and Rihanna's "This Is What You Came For," a representative for Swift confirmed to Rolling Stone. The singer-songwriter used the pseudonym Nils Sjoberg for the song. TMZ initially reported the story that Swif... more info

PopSugar — The neverending saga that is Taylor Swift and Calvin Harris's breakup has just taken an interesting turn. It turns out that the DJ's latest hit song, "This Is What You Came For" featuring Rihanna, was penned by none other than his pop star ex. "Tayl... more info

Idolator — Now that’s an interesting twist. more info