News: Was it the kiss with Miley Cyrus? Katy Perry & John Mayer split

Seriously we can't keep up with Katy Perry and John Mayer-one minute we're hearing that they're engaged, and now it's thought that the pair have SPLIT.
According to E! News, a source close to the pair has revealed that Katy Perry has ended things with John Mayer within the last few days. But we're confused here. The couple appeared to be loved up over Valentine's weekend- John Mayer even took to Twitter to express his love for his boo.
Or was it the was Katy Perry's smooch with Miley Cyrus over the weekend that did it???
See tweet & pics below.

I got the hottest girl in the game Pick in' my brain
— John Mayer (@JohnMayer) February 15, 2014

Katy Perry putting her song "I kissed a girl" into practice with Miley Cyrus!!!