John Mayer Miley Cyrus Hooking Up?!

Hold On To Your Dinner: The fab fiction writers over at Star Magazine are working on the next great American novel about love, sex, and hooking up in modern-day Hollywood.

Starring as the new-age Rhett and Scarlett: John Mayer and Miley Cyrus….

After skipping his way through every twentysomething north of Rodeo Drive, rumor has it that 33-year-old John Mayer spent last weekend “hooking up” (Hint, Nudge, Wink…) with 18-year-old Miley Cyrus.

Shh! Don’t tell Billy Ray!

“Miley is very turned on by John,” a loose-lipped Cyrus informant tells the tab. “He usually plays in nonchalant, but he’s interested too. They’ve actually been friends for years, but now that she’s 18, he’s really digging the attention. I think they’re both ready for a good time!”

The teenage scandal-magnet followed the notorious womanizer around all night “like a puppy dog” at Clive Davis’ Pre-Grammy Party last Saturday night. Aside from singing, the evening was filled with nausea-inducting public displays of affection.

“She put her arm around his waist, and even grabbed his behind,” an eyewitness told the mag, and apparently Mayer “reciprocated.”

“Things got even hotter between them the following evening at the Grammys,” another source chimed in

Backstage, Miley was rubbing John’s back, and when he thought no one was looking, he leaned over and kissed her.

“It was quick and intense and a bit shocking, but it also seemed sweet,” says the eyewitness. “Afterward, Miley slapped his butt and told him, ‘You rock!’”

(Insert gagging here…)

“Miley’s parents Billy Ray and Tish are freaked out about her interest in John, but she’s not listening to them at all!”

Well…what else is new?

It was only a year ago that Miley’s pal Taylor, also more than a decade John’s junior, took up with the rocker only to end up heartbroken. You know…“allegedly.” Miley is under the delusion — er — impression that she’ll replace Jessica Simpson as John’s next “sexual napalm.”

“Miley has told her friends she believes she can make John a one-woman man. She thinks they’d make a great pair because she’s as wild as he is!”