Katy Perry's friends are saying she is "addicted" to John Mayer.
The couple got back together just two weeks after Katy dumped John. She had a change of heart and went begging him to take her back.
A source told the National Enquirer: "After they split, Katy had a change of heart and started bombarding John with phone calls, texts and e-mails, begging him to get back together. Katy has been drowning her sorrows in a sea of booze and partying. It's inconceivable that she would take John back, but she's very vulnerable right now."
"Katy has spectacularly bad taste in men, and to her John is the coolest guy around. But the next time he crushes her heart – which is bound to happen soon – it could have devastating consequences for her, both personally and professionally."