Nicole Kidman “Never Texts” Husband Keith Urban, But Does Chat With Kids Connor and Isabella

Nicole Kidman's secret to a happy marriage? No texting!

"My husband and I never text each other. We never do," the 48-year-old actress said of spouse Keith Urban, 47, in a new interview with DuJour magazine.

"Once in a blue moon, we'll text. But mainly we say, 'I want to hear your voice.' That's very unusual but we've been together for 10 years. We started like that and we haven't changed it. We don't email each other either. So it's about trying to keep it as intimate and personal as possible," she said.

Nicole and Keith in June 2013.

Though Nicole — who has two daughters, Sunday Rose, 7, and Faith Margaret, 5, with Keith — doesn't text her hubby, she "definitely" keeps in touch with her two older children, Isabella, 22, and Connor, 20!

RELATED: Nicole Kidman Talks Wanting More Kids with Keith Urban

"I have four children, so to stay in touch with them it’s very important. I’m definitely engaged in [texting with my older kids] but I don’t let it rule my life," the Australia star confessed.

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Nicole and her first husband, Tom Cruise, adopted Isabella and Connor after tying the knot in 1990. They later divorced in 2001 after 11 years of marriage. Following their parents' split, Isabella and Connor chose to live with their dad.

"They are generous, kind and hardworking. And these are traits that I love to see in my children. They live with Tom, which was their choice. I'd love them to live with us, but what can you do?" the actress said of the duo in a May 2014 interview with Women's Weekly.