Perry fuelled speculation of wedding bells by brandishing a huge diamond ring on the relevant finger at last week's Elle Style Awards, but just days later one of those anonymous sources tells E! News the couple are no more.
Katy Perry and John Mayer have reportedly split up
The magazine alleges the Roar singer broke up with Mayer "within the last few days" and notes he was "noticeably absent" from Perry's side on her recent trip to London and Milan.
US weekly last week reported denials they pair were engaged, though cited a source as saying they had spent Valentine's Day together.