Katy Perry loves John Mayer. He's a smart guy, according to the pop star.
"He literally is a genius, as is evident from his songwriting," Perry tells Billboard magazine, in which she also promotes her highly anticipated album PRISM.
"I always tell him, 'Darling, you know I'm going to have to give your mind to science after you've passed, because we're going to have to understand how all these sparks work.'"
You may vomit on cue. But keep the bag handy, because it continues:
"We'll be in bed, and he'll be doing the crossword puzzle. Every night, he tries to finish in under 10 minutes," she says. "When he puts his mind to something, he really gets it done very well."
John Mayer. Singer. Songwriter. Womanizer. Crossword God.
"I've been a fan of John's for years before I got to actually kiss him," she says. "But I've been such a fan, I think he's so incredibly talented and gifted and a genius songwriter."
"So to be a part of anything he was doing was just natural."
As for her own work, Perry also opens up about her album (due out October 22), admitting she penned some personal songs in the wake of her divorce from Russell Brand.
"All the songs are real-life moments," she explains.
"I can only write autobiographically. I put all the evidence in the music. I tell my fans if they want to know the real truth about stuff, just listen to the songs."
Which is partly why this record is so drastically different from her previous efforts, as evidenced by Perry literally laying her own image to rest in the "Roar" music video.
"I didn't want to do Teenage Dream 2.0," she insists.
"Teenage Dream was highly conceptual, super-pop art. PRISM is more organic, au naturale, vulnerable and honest, but still has the same amount of fun."
As for where she sees herself in the future?
"I'll probably turn into more of a Joni Mitchell," Katy Perry confesses. "As I inch towards my 30s, I think my fourth record will be more of an acoustic guitar album."
"We'll see. I can't get ahead of myself. I'm still doing the work: I'm a good balance of left and right brain, and to be an artist with a long career, you've got to have both."
"One thing John [Mayer] said to me was, ‘It's harder maintaining success than finding it.' I've got a few records under my belt, and I still feel like a brand-new artist."
"People still want that truth to cut through."
Literally genius advice right there.