Over the summer of 2016, Calvin Harris took to Twitter to say that Taylor Swift had attempted to sabotage Katy Perry's career after she allegedly stole the backup dancers that Swift was supposed to use during her world tour. While the incident happened more than 5 years ago, Swift hasn't gotten over the incident and thus the feud began.
According to OK! Magazine, the two have grown close together ever since working in the studio.
So is Calvin Harris dating Katy Perry? We're not sure, but that's what the celebrity gossip tabloids are saying.