Penelope Cruz has been very, very secretive about the status of her relationship with Oscar-winning actor Javier Bardem.  Although strong rumors persist that the couple is engaged and set to marry very soon, the pair refuse to shed light on the situation.

Penelope was on The Late Show on Tuesday to promote her new film Broken Embraces. When Letterman began questioning her about a potential marriage between her and Bardem, she shrugged off the questions. When pressed, she simply told him that she doesn`t "feel comfortable" talking about this issue.

"I`ve been here a few times with you," she said. "You know I`m tough. One thing I don`t do, I don`t lie about my personal life."

She explained that her love life and privacy are "sacred" and that she doesn`t "give details about it because I am allergic to that." Letterman responded: "So you know, but you don`t want to tell me?" Cruz, laughing, said "I choose not to share some things!"

Rumors of a marriage between Cruz and Bardem have been persisting for a while now. The buzz grew even bigger in October when Penelope stepped onto the red carpet displaying a huge diamond ring.

The two actors recently shared screen time in Woody Allen`s Vicky Christina Barcelona. Cruz won an Oscar for her performance in the film.