Katy Perry Put Her Lips On John Mayer's New Album, But John Won't Return The Favor!

Whether the favors you’re trading are professional — like album cameos — or personal — like ORAL SEX — we believe one good turn deserves another!

John Mayer apparently does NOT agree!!

Even though lovah Katy Perry will sing on his next album, Johnny boy ain’t too keen on returning the favor!!

KatyKat was asked recently whether the Wonderland singer will add lip-service of his own to Prism, but our Magic 8-Ball says “Outlook not so good.”

She revealed:

“He is not, actually. But thank you for asking.”

Aww!!! That’s sad!!!

Was he never invited in the first place, or did Katy ask John to help and he refused??

Nothing’s worse than a stingy lover!!!

[Image via Pacific Coast News.]