Move aside, Taylor Swift. Katy Perry has some famous exes to sing about.
Katy Perry's life has changed a lot since 2010's Teenage Dream, and she said her new album "will be much darker."
"It was inevitable, after what I went through," Katy said last year (via MTV). "If I had a time machine and could go back in time, I would. But I can't, so you'll discover another part of me."
Katy told OK!...