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Although Nicole Kidman has always been very guarded when pressed to discuss her marriage to Tom Cruise, she is opening up to GQ magazine about certain aspects of her sexual experiences.

The 42-year-old Australian native tells the mag, “I’ve explored loss and love in terms of being in a grief-stricken place, I’ve explored strange sexual fetish stuff, I’ve explored the mundane aspect of marriage, and monogamy.” As she admits this, Nicole poses for the cover dressed in a vampy black underwear and thigh-high boots combo.

However, that’s about as much as Nicole was willing to reveal, telling GQ, “I want to honor that marriage for what it was, and there is nothing I would go into about that. I have never discussed the intricacies of it and I never will.”

As for her current marriage to Keith Urban, Nicole says, “It’s a very extraordinary, adventurous place to be: incredibly raw, incredibly dangerous and you’re very much out at sea.” She adds, “When you commit to someone like that, you live and die together by that decision.”

Speaking of commitment, the actress recently signed-on to star opposite Robert Pattinson in Bel Ami, the film adaptation of the Guy de Maupassant novel, telling the story of Georges Duroy. That should be an interesting combination.

Gallery Info: Nicole Kidman covers GQ magazine and steps out for breakfast and a children’s music class with Sunday Rose and Keith Urban Sunday morning in Nashville, Tennessee.