The couple ended their relationship earlier this month with reports suggesting that Mayer believed Perry was ruining his credibility as a singer, reported Digital Spy.
"There's no question that Katy wants to settle down, but right now, she's not ready to fling herself into another relationship. If anything, she'd be open to reconciling with John if he can get his act together," a source said.
Perry's friends reportedly feel that Mayer "emotionally bailed" on her and that they got together too soon after she broke up with ex-husband Russell Brand.