updated 10/16/2013 AT 11:00 AM ET
•originally published 10/16/2013 AT 11:45 AM ET
“My family’s my rock,” Efron said at a Culver City, Calif., press event Tuesday to promote his latest film, That Awkward Moment. “I know they’re not going anywhere. More and more I’ve come to rely on my little brother to keep me grounded. He’s 21 now.”
Efron added of his support system: “I know my family’s always going to be there. And there’s also – as my life changes, sometimes they can’t really be there for you … and I rely on my friends.”
Yes, he gets naked onscreen. And yes, it was awkward.
“There was like a sock thing. It fell off. You just cup your hands,” Efron explained of handling the on-screen nudity. Fans hoping for a hot sneak peek are in luck with a new – and NSFW! – trailer, which shows off his backside and famously buff body.
Opening in January, the romantic (and sometimes raunchy) comedy traces the male bonding and challenging love lives of three single guys in New York City as they come to terms with relationships.
For his own love life, the single Efron, who previously dated Lily Collins, said he likes a strong and happy woman. “I think someone that’s creative and smart, self-confident,” he said. “A nice smile, that’s a good thing to have.”
Warning: This video contains NSFW material:
Let’s start off the movie award season! Watch PEOPLE.com’s exclusive live-streaming show with interviews from the red carpet of the Hollywood Film Awards on Monday, Oct. 21, starting at 9 p.m. ET.