Biel: 'I'm not sure about marriage'

Jessica Biel has admitted that she is not sure if she will marry boyfriend Justin Timberlake.

The actress cited her career as a possible obstacle to walking down the aisle, People reports.

"I have a lot to do, career-wise," she told Allure magazine.

The Powder Blue star recently bought an apartment in New York City with the 'Sexy Back' singer.

"I haven't moved out to New York City full time," she said. "I'm here because I'm interested in the theatre."

Biel maintained that her feelings for Timberlake are strong, but is “very ambitious” when it comes to acting, adding that her good looks can get in the way of her scoring more dramatic roles.

"I just want an opportunity. If you don't like the audition, then don't hire me. But if you don't even want to see me - that's hurtful. It really is a problem."