Perez Hilton remembers when he made out with John Mayer in new book

Perez Hilton gleefully recalls the time he made out with John Mayer in his upcoming memoir.

In 2007, Hilton had finished co-hosting MTV’s New Year’s Eve celebrations with Christina Aguilera and the two of them decided to hit a club in Chelsea.

While there, they met up with Jessica Simpson and her then-boyfriend John Mayer. As the quartet were seated, the gossip blogger, 42, alleges that Mayer leaned in and announced, “‘I like to watch gay porn, you know.’”

The crooner then helpfully added, “‘My favorite porn star is Brent Corrigan. He really turns me on.'”

Hilton writes that after that, things proceeded very quickly as Mayer leaned in and shoved his tongue into Hilton’s mouth. Despite being momentarily paralyzed, the gossip maven began making out with Mayer.

Hilton says the pop princess seemed mortified by her boyfriend and covered her face with her tresses.

After it was done, the “Free Fallin’” singer, 42, sat back with a “satisfied” look on his face and turned to gaze affectionately at Simpson, who “didn’t seem to know whether she was incredibly embarrassed or really turned on.”

Mayer and Simpson had an infamously on-and-off relationship, with Mayer ungraciously referring to Simpson as “sexual napalm.” Simpson detailed breaking up and getting back together with the rocker nine times in her memoir, “Open Book.”

Hilton also spills the tea on a multitude of other celebs like Lady Gaga, Britney Spears, Lindsay Lohan and Paris Hilton.

He was good pals with the hotel scion-turned-reality star and attended many raucous parties at her place. Perez says he never saw Paris do any “hard drugs” but she was “one of the biggest stoners, I ever met in my life.”

Perez alleges that the “Simple Life” star smoked weed every day from morning until late at night.

Mayer’s, Simpson’s and Paris Hilton’s reps did not respond for comment.

“TMI: My Life in Scandal” hits bookstores Oct. 6.