As such, it doesn't take Sherlock Holmes to discern that Perry's on-again, off-again romance with John Mayer is definitely on. That was evident from "Who You Love," the delicate, unadorned duet Perry and Mayer perform on Mayer's recent album, "Paradise Valley." On "PRISM," meanwhile, Mayer shares a co-write credit with Perry and Kurstin on "Spiritual" and plays guitar on the Stargate-produced "It Takes Two." Perry also claims Mayer provided the title for the album -- a reference to her wide spectrum of emotions.

http://www.billboard.com/articles/co...ory?page=0%2C1

Ok then

EDIT: NOT YOU EDITING YOUR POST

at least you knew it wasn't classy.

!! like, they rushed in here

--

Her Firework coming up?

how cute!

Sweet.

That's kind of cute. I love Mayer's music. Hopefully we'll be able to hear some of his influences in her new songs he helped with.

Which is a good thing.

i'd believe it

Taylor can write a new song now.

Stargate

why do the Taylor Swift fans not like John Mayer omg

Has Sara Bareilles come up with her first single, and has John Mayer come up with her album title.

I see you, Katheryn.

That's cute. And John chose a great title

I love John Mayer. By far the best male artist today. I hope his songwriter and guitar influence will give us the old Katy back and get rid of this bubblegum trash.