Secondhand smoke apparently can't quell John Mayer's desire for Jennifer Aniston, who appears to be really turned on by motormouths. People spotted the locks-primping lovebirds sitting thisclose as they enjoyed a tête-à-tête a few days back at the Chateau Marmont in Los Angeles. The "Goonies"-obsessed crooner, 30, "talked feverishly" as the actress, 39, sucked on cancer stick after cancer stick while hanging in an outdoor courtyard with pals, including Billy Crudup. Despite the yammering and the nicotine haze, they looked "besotted with one another," a source blabs to the mag, adding, "John and Jen were giving each other longing looks and were practically sitting on one another." They made small talk for about an hour before exiting together. Meanwhile, a Mayer buddy who's uncomfortably familiar with the singer's "sensational" bedroom skills is helpfully promoting them to OK!. "I'm not sure what exactly he does in bed," says the insider, "but after girls sleep with him, they're ruined." No, not that kind of ruined ... "They get totally hung up on him and want more!" boasts the Mayer-boosting snitch of his conveniently hard-to-verify talents. "Whatever John's secret is, he should market it. He could retire from the music industry." Mayer may have offered some insight into his enigmatic charms as he exited a Beverly Hills, Calif., medical center on Wednesday. Paparazzi snapped him carrying a bag he'd jokingly labeled, "experimental human growth hormones -- 2X daily."

In related news, it seems Aniston's ex also got in some al fresco wooing at the Chateau Marmont. OK! spied British model Paul Sculfor giving his full attention to Cameron Diaz at the hotel on June 8. "Cam and Paul were sitting on the patio, leaning in toward each other," a snitch tells the mag. "Her body language looked like she was really comfortable with him." The eyewitness then gets cocky with some serious conclusion-leaping, claiming the leggy, Diddy-entrancing actress "looked genuinely like a girl falling in love."

Pam and Tommy keep the flame burning -- and show how their love has grown and matured -- while partying in Las Vegas in 2007.

Stop us if you think you've heard this one before: Pamela Anderson and Tommy Lee, whose tumultuous marriage went belly-up in 1998 after three years, two sons and one seminal sex tape together, are once again hot and heavy. "Pamela and the kids have moved in with me," the rocker kvells to Rolling Stone. "It's awesome, man. It's definitely working. You can tell on the kids' faces -- they're happy when we're together." The aging bombshell, whose recent romantic misadventures have included disastrously brief marriages to Kid Rock and Rick Salomon, once accused Lee of a variety of misdeeds, from giving her hepatitis C to spousal abuse. But maybe there's something to what she predicted in 1999: "I picture Tommy and me ... old, toothless, on a bench somewhere with our tattoos." Adds an optimistic Lee to Rolling Stone, "We've only given it a try 800 times -- 801, here we go."

Chris Martin wasn't carrying a whole lot of baggage when he embarked on a romance with Gwyneth Paltrow. The paparazzi-hating Coldplay front man admits to Rolling Stone that the Oscar-winning mom of his moniker-challenged tots, Apple, 4, and Moses, 2, has been his one "serious relationship." "Is that weird? I don't think it's that weird," he reassures himself. "It wouldn't be weird 200 years ago ... Think of Romeo and Juliet." While comparing one's marriage to Shakespeare's tragic teen lovers is a risky move, Martin recovers nicely thanks to an impressive display of uxoriousness. "I always felt it would be great to be with a very powerful woman because it would keep you in your place," he explains. "Being married to someone very successful and very powerful basically keeps you hungry to improve." Well, that and her famous exes. "You've got to be hungry," says the warbler. "If your wife went out with Brad Pitt, you'd want to prove yourself, you know what I mean?"

Despite the massive sparkler weighing down her hand, Mariah finds the strength to point to the Bergdorf items she supposedly wants.

Mariah Carey may have a palatial Manhattan penthouse with its own climate-controlled closet and Moroccan-themed den, but it seems she could still use a few newlywed essentials. A snitch tells the New York Post that Mrs. Nick Cannon's assistant recently e-mailed more than a hundred of her well-heeled pals to inform them that she's registered at Bergdorf Goodman, just in case they want to commemorate her wedded bliss with a gravy boat. "It's odd because she's not even having a big wedding party or anything," the mole tattles to the paper. "It was assumed they'd have a big celebration when they got back, but no. They just want the gifts." The purported registry for the diamond-encrusted duo, who have bucked the odds and made it past the all-important six-week mark, is said to include "fine china" and "very expensive silver stemware."

With the Miley Cyrus tween juggernaut just one more non-scandal away from ending in a bonfire of Clearasil- and Bonne Bell Lip Smacker-fueled "Hannah Montana" merchandise, her best friend is trying to tamp down romance rumors. Mandy Jiroux, the Disney idol's pal and dance partner, insisted on Ryan Seacrest's radio show Wednesday that there's no truth to blog talk that Miley, 15, is dating a 22-year-old backup dancer, with whom she was recently photographed. "I don't know where they would get that," pooh-poohs Mandy of the legally questionable non-coupling. "She's not dating a backup dancer or a 22-year-old. She's totally single." Miley's rep adds to FoxNews.com that she and the hoofer are "just friends."

Next: Quickies: Tom Cruise vs. Dr. Drew, Klum's Womb