Is Katy Perry making John Mayer crazy?

Rumour has it Katy Perry is making John Mayer crazy.

According to a report on ShowbizSpy, John told pals that Katy is “unpredictable” and he doesn’t know where he stands with her.

“This woman’s making me crazy!” John reportedly said.

“She’s totally unpredictable and I never know where I stand with her… it sucks!”