John Newman on Taylor Swift's treatment of ex Calvin Harris: It did get brutal

Taylor Swift and Calvin Harris; (inset) John Newman

Taylor Swift and Calvin Harris; (inset) John Newman

Taylor Swift's treatment of ex Calvin Harris has been branded "brutal" by his best pal, John Newman.

The Love Me Again singer John was by the DJ's side throughout the messy split, which led to a war of words after it emerged Taylor had ghostwritten Calvin's hit This Is What You Came For.

Fans discovered her involvement after John innocently tweeted his congratulations on the song's success to Calvin, vocalist Rihanna and Taylor - before deleting and reposting the message without mention of Tay.

The revelation sparked a public spat between Calvin and Taylor over why she was uncredited.

In an interview, John said, "Yeah, it did get brutal. I'm like Calvin, happy to take a back seat. I like my music to do the talking. When I tweeted that, there was a text almost immediately from Calvin. He was like, 'Down. Now'. And then it all came out anyway. No I'm not (friendly with Taylor any more], I don't agree with what's going on., but I shouldn't comment further. I wouldn't know her well enough, weirdly. She's another world."