- Photo: HAUS/GSI1 of 32
- Photo: HAUS/GSI2 of 32
- Photo: HAUS/GSI3 of 32
- Photo: Charley Gallay/WireImage4 of 32
- Photo: Matt Baron / BEImages/Rex USA5 of 32
- Photo: Todd Williamson/WireImage6 of 32
- Photo: Chris Carlson/Invision/AP7 of 32
- Photo: Lester Cohen/WireImage8 of 32
- Photo: Sara De Boer/StarTraks9 of 32
- Photo: KB4/WENN10 of 32
- Photo: Clasos/CON/Getty Images North America11 of 32
- Photo: George Pimentel/WireImage12 of 32
- Photo: RMB/ZOJ/WENN13 of 32
- Photo: George Pimentel/WireImage14 of 32
- Photo: Gregg DeGuire/WireImage15 of 32
- Photo: Teach/Fame Flynet16 of 32
- Photo: John Shearer/Wonderwall17 of 32
- Photo: Kevin Mazur/WireImage18 of 32
- Photo: Katy Winn/Invision/AP19 of 32
- Photo: Amanda Schwab/StarTraks20 of 32
- Photo: DAN STEINBERG/Invision/AP21 of 32
- Photo: Scott D. Smith/Retna Ltd.22 of 32
- Photo: Brian Hineline/Retna Ltd.23 of 32
- Photo: SNAPPER/Bauer-Griffin24 of 32
- Photo: Duncan Bryceland/Retna Pictures/Retna Ltd.25 of 32
- Photo: Scott Weiner/Retna Ltd.26 of 32
- Photo: Dan Steinberg/Invision/AP27 of 32
- Photo: HonopixFrame, PacificCoastNews.com/PacificCoastNews.com28 of 32
- Photo: John Shearer/Invision/AP29 of 32
- Photo: Nick Sadler/StarTraks30 of 32
- Photo: Fallen Star/PacificCoastNews.com31 of 32
By Chris Gardner and Kat Giantis
It appears Katy Perry did not heed the Internet's advice to back away slowly from John Mayer. On the heels of their "sexy" dinner date last Wednesday at the Chateau Marmont, sources tell Wonderwall that the pair put on a public display of saliva swapping during a pool party on Saturday at a home in the Hollywood Hills.
"They were all over each other in the pool and were not being shy about it," an eyewitness tells us. "Katy had her legs wrapped around John in the water, and they were making out in front of everyone."
Concludes the spy, "They are clearly an item!"
The day after the pool-set tonsil-polishing, Katy, 27, was snapped entering the Four Seasons Hotel in Beverly Hills just a few minutes after John, 34, marking yet another sign that a hookup is afoot.
In addition to being spied "holding hands across the table" and locking lips while they dined at the Chateau (per Us), paparazzi caught the doll-faced popster being dropped off at her apartment the next morning in what appeared to be the crooner's Ferrari.
Two weeks earlier, Perry and Mayer reportedly rendezvoused at Soho House, where they once again fondled each other's fingers and cuddled up.
Here's hoping the newly ex Mrs. Russell Brand approaches the romance with eyes wide open and a nondisclosure agreement in hand, given Mayer's indiscreet revelations about onetime flames Jennifer Aniston and Jessica "Sexual Napalm" Simpson.
"Maybe he's a changed man, but Katy likes bad boys," a source tells Life & Style. "I can't imagine John's changed that much."
At least for the moment, they seem to be keeping things casual.
"I don't think either of them are trying for anything serious right now. She's not talking like he's The One," an insider explains to People. "She's comfortable around guys who understand the craziness of that world, which he definitely does."
But does he understand how to woo? Katy tells the September issue of Elle that she's "a woman who likes to be courted -- strongly."
RELATED ON WONDERWALL:
Diane Kruger, Margot Robbie, and Lindsay Lohan all get an F on this week's Fashion Offenders.Watch Video »
Katy Perry, Pink and the Kardashians take spring break early this year on today's Celebs Gone Social.Watch Video »
David Beckham shares new underwear shots, and more celeb news on social media on Celebs Gone Social.Watch Video »
Sofia Vergara poses in a revealing neon bikini while her "Modern Family" castmates hit the beach in Australia on Celebs Gone Social.Watch Video »
Jennifer Lopez dishes on super-steamy "Boy Next Door" sex scenes, getting in shape to strip down, awkward moments on set and more.Watch Video »
Check out Taylor Swift's A-list ladies night out with BFFs Karlie Kloss, Ellie Goulding, Cara Delevingne and more on today's Celebs Gone Social.Watch Video »