WEDDINGS
05/16/2013 05:20 pm ET

Matthew McConaughey Marriage: Wife Camila Alves Shares Relationship Secret

NEW YORK, NY - APRIL 21:  Actress Camila Alves and Actor Matthew McConaughey attend The Cinema Society Screening Of 'Mud' hos
NEW YORK, NY - APRIL 21: Actress Camila Alves and Actor Matthew McConaughey attend The Cinema Society Screening Of 'Mud' hosted by Fiji Water and Levis held at The Museum of Modern Art on April 21, 2013 in New York City. (Photo by Jennifer Graylock/Getty Images)

What's Matthew McConaughey and model Camila Alves' marriage secret? Spending time alone without the kids.

"The main thing to always remember -- and I think it's important -- you and your partner came first before the kids," Alves told Us Weekly Tuesday. "So even if it's taking a night here or a day there or a weekend, it's just very important to do."

McConaughey and Alves began dating in 2006 and had two children before marrying in 2012. Their third child was born in December.

Earlier this month, McConaughey said that his marriage advice is to remain "realistic" about your spouse and maintain some independence.

Find out which other celebrity couples had children before marriage in the slideshow below.

PHOTO GALLERY
Celebrity Couples Who Had Babies Out Of Wedlock

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