12/05/2013 at 02:00 PM EST
Playing a mom in her new film The Truth About Emanuel
stirred up some maternal instincts for Jessica Biel
"Every woman has some kind of intuition of how they'd interact with a child," she told PEOPLE at the Los Angeles premiere of the film on Wednesday.
"I feel comfortable around kids, so I was kind of rolling with that idea," the actress admits.
Wearing a two-piece lace skirt and cropped top by Giambattista Valli topped with a leather jacket, Biel, 31, – who married Justin Timberlake
in a romantic Italian ceremony
in October 2012 – says she's open to having kids of her own, but she hasn't put a deadline on it.
"I'm not sure about sooner or later," she said. "But definitely at some point."