Washington, Nov 18 : Hollywood actress Penelope Cruz has refused to confirm or deny engagement to actor beau Javier Bardem.

The Oscar winning star sparked engagement rumours, after she was spotted sporting a sapphire-and-diamond sparkler on her ring finger at the October premiere of Broken Embraces.

But when asked by talk show host David Letterman to confirm, the 35-year-old star refused to comment.

"I don''t feel comfortable talking about my private life in public," People magazine quoted her as saying.

Letterman pressed and Cruz continued, "I''ve been here a few times with you, you know I''m tough. One thing I don''t do, I don''t lie about my personal life," she said.

"It''s sacred to me. It''s my life. But I don''t give details about it because I am allergic to that." (ANI)