Katy Perry, John Mayer Breakup Is "Extremely Amicable"

From Legendary Lovers to friends? John Mayer's romance with Katy Perry may be over -- for now, anyway -- but a source close to both stars tells Us Weekly there's no bad blood between them.
The breakup was "mutual" and "extremely amicable," the insider says, noting that the singers remain close friends, despite reports from other sources that they were "fighting" a lot before the split. As for what went wrong? Though another source previously told Us that Perry's touring schedule was a factor, this pal says they simply "made the mature decision that it was the right time."