By Kat Giantis
Remember that night of dirty-dancing and lip-locking Zac Efron enjoyed last month with seemingly back-on girlfriend Vanessa Hudgens? He must have had a really good time, because E! Online says he reenacted the fun on Thursday, only this time Vanessa had a stand-in.
According to a spy at appropriately named Los Angeles hot spot Voyeur, the blue-eyed and lately bulked-up actor couldn't keep his hands off little-known Australian actress Teresa Palmer.
"They got there a little after midnight," relays the eyewitness. "They were at a VIP table ... They all took tequila shots together. He was grabbing her butt and doing very suggestive dancing. Then they made out a couple of times standing up where they were dancing. I was surprised they were doing that in front of everyone. It was like they didn't care."
(That sound you hear is the aging "High School Musical" demographic collectively wailing in disappointment.)
The pair apparently remained joined at the hip before exiting the club together.
RELATED: The year in hookups and breakups
Earlier in the evening, Zac, 23, joined the 24-year-old starlet at a post-screening party for her forthcoming flick "Take Me Home Tonight."
"I'm just here for my friends," he told Movieline. "And I always have fun at these kinds of events."
Efron's rep did not respond to our request for comment on the nature of his relationship with Palmer, although she was a little more forthcoming.
Zac, Teresa tells E!, "is such a sweetheart."
Word of their night out conveniently comes just two weeks before Palmer, whose exes include Russell Brand and Topher Grace, hits screens in the heavily hyped "I Am Number 4." It also comes two weeks after the actor was spotted acting "cute and loving" with Vanessa in Wilmington, N.C., where she's filming "Journey 2: The Mysterious Island."
Behind the Scenes
Kendall Jenner and more stars share the best behind-the-scenes photos from the Cannes Film Festival on today's Celebs Gone Social.Watch Video »
Check out Emma Stone, Emily Blunt, and Julianne Hough's style statements on this week's OMG Celeb Fashion hosted by Wonderwall's Kirby Kristen.Watch Video »
See how Sarah Michelle Gellar, Cindy Crawford and more stars celebrated Cinco de Mayo on today's Celebs Gone Social.Watch Video »
Gisele Bundchen remembers her first runway, plus more supermodels' big week on social media on today's Celebs Gone Social.Watch Video »
Avril Lavigne enjoys some fun in the sun while vacationing in Miami on today's Celebs Gone Social.Watch Video »
The ladies of "Pretty Little Liars" take New York City by storm on today's Celebs Gone Social.Watch Video »
"#RichKids" newcomer Taylor-Ann Hasselhoff dishes about the drama on the new season and about spending QT with her dad, David Hasselhoff!Watch Video »
Ryan Reynolds gets up close and personal with a tortoise, plus more of his best Instagram posts on today's Celebs Gone Social.Watch Video »
Like us on Facebook?
UP NEXTLike Their Folks
From Crowd Ignite