Katy Perry and John Mayer have been up and down (or "hot and cold," if you will) for years now, and E! News has exclusively learned from a source close to the couple that they've called it quits again.
According to E! News:
The insider didn't offer any specifics as to the reasoning behind the two celebs' decision to break up, but notes that they're known to make-up time and time again (we know), so it's very possible these two will reunite in the near future.