The 26-year-old singer said he does not know the "Blank Space" hitmaker well but whatever she did with Harris, 32, was wrong, reported Female First.
"From her side? 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 gone on... But I shouldn't comment further. I wouldn't know her well enough, weirdly. She's in another world," he said.
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