There's no ill-will between singer John Mayer's former girlfriends Taylor Swift and Katy Perry.
Swift dated Mayer from 2009 to 2010 while Perry has been in an off-and-on relationship with him since last year, reports entertainmentwise.com
Indeed, Swift and Perry's friendship was on display on social networking platform Twitter.
Perry changed the lyrics of Swift's song "I knew you were trouble" to reveal her dinner plans. She posted: "I knew you were truffle when you walked in."
Swift retweeted Perry's post, and in a direct tweet to Perry, she posted: "Katy Perry please never change."
