Nicole Kidman covers the March 2014 issue of InStyle magazine
, in which she spills some details about her still very romantic relationship with husband Keith Urban.
"For every single night he's away, he leaves me a love letter," she reveals. "Every single night of our relationship."
She also doesn't mind touring with her Grammy-winning husband.
"That's basically how I've seen most of America, on that bus," she says about life on the road.
"Keith and I are both gypsies at heart. We can make our home wherever we are. The girls [daughters Sunday, 5, and Faith, 3] are like that too now, so we take them everywhere."
In fact, the glamorous Nicole, 46, surprisingly says she's "country at heart."
"I have a real desire to be outdoors, a desire for simplicity -- a slightly slower, relaxed approach to life. A community, not a big-city feel. That's what I grew up with, and it's what I prefer."
As for her much buzzed-about role as legendary actress Grace Kelly in Grace of Monaco
, which Variety
reports she beat out "nearly every top actress in Hollywood" for -- Kidman stresses that she doesn't let the fear of living up to certain roles ever stop her.
"I always try to push through fear. I won't be crippled by it. People say, 'Oh you take such risks, or 'You're brave.' And I'm like 'Well, if you only knew -- inside I'm really frightened!' she admits. "But the way people navigate pain and fear is fascinating."
The March issue of InStyle hits newsstands Friday, Feb. 14.