Nicole Kidman talks marrying ex Tom Cruise at a young age: 'I look back now and I'm like, 'what?''


Nicole Kidman is reflecting on her marriage to her first husband, Tom Cruise.

The 49-year-old actress has been notoriously tight-lipped on her more than decade-long marriage to Cruise, which ended in 2001. But in a candid new interview, Kidman says she can't believe she married Cruise at just 23 years old, after the two met on the set of 1990's Days of Thunder.

"I was so young when I got married," Kidman acknowledges to Red magazine. "I look back now and I'm like, 'What?'"

WATCH: Isabella Cruise Gets Married, Parents Tom Cruise and Nicole Kidman Nowhere to Be Found

Still, the Oscar-winning actress has no regrets -- even when she compares herself to celebs these days.

"You look at Taylor Swift, I mean how old is she? She's 26. I had two kids by the time I was 27 and I'd been married for four years," she says. "But that's what I wanted."

PHOTOS: A look back at Tom and Nicole in happier times

30 PHOTOS
Tom Cruise and Nicole Kidman during their marriage
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Tom Cruise and Nicole Kidman during their marriage
Actress Nicole Kidman and actor Tom Cruise attend the 19th Annual American Film Institute (AFI) Lifetime Achievement Award Salute to Kirk Douglas on March 7, 1991 at Beverly Hilton Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend the 'Brooklyn Laundry' Play Performance on May 3, 1991 at the Coronet Theatre in West Hollywood, California. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend 'A Few Good Men' Westwood Premiere on December 9, 1992 at Mann Village Theatre in Westwood, California. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend the 'Guys and Dolls' Musical Performance on May 13, 1992 at Martin Beck Theatre in New York City. (Photo by Ron Galella, Ltd./WireImage)
Director Barry Levinson, actress Nicole Kidman and actor Tom Cruise attend the 64th Annual Academy Awards After Party Hosted by Irving 'Swifty' Lazar on March 30, 1992 at Spago in West Hollywood, California. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 'Year of the Comet' West Hollywood Premiere on April 21, 1992 at DGA Theatre in West Hollywood, California. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend the 'Carmen' Opening Night Performance on January 22, 1992 at Dorothy Chandler Pavilion, Los Angeles Music Center in Los Angeles, California. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend The Academy of Motion Picture Arts & Sciences and The Museum of Television & Radio Celebrate the Launch of 'Oscar's Greatest Moments (1971-1991)' on February 10, 1992 at The Museum of Television and Radio in New York City. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 1993 U.S. Open Tennis on September 6, 1993 at Flushing Meadows Park in Flushing, Queens, New York. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend The Academy of Motion Picture Arts & Sciences and The Museum of Television & Radio Celebrate the Launch of 'Oscar's Greatest Moments (1971-1991)' on February 10, 1992 at The Museum of Television and Radio in New York City. (Photo by Ron Galella/WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 50th Annual Golden Globe Awards on January 23, 1993 at Beverly Hilton Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend 'The Firm' Beverly Hills Premiere on June 28, 1993 at Academy Theatre in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 66th Annual Academy Awards on March 21, 1994 at Dorothy Chandler Pavilion, Los Angeles Music Center in Los Angeles, California. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the Ninth Annual American Cinematheque Award Salute to Rob Reiner on September 9, 1994 at Beverly Hilton Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend the 'Batman Forever' Westwood Premiere on June 9, 1995 at Mann Village Theatre in Westwood, California. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 'Jerry Maguire' New York City Premiere on December 6, 1996 at Pier 88, Chelsea Piers in New York City. (Photo by Ron Galella/WireImage)
Actor Tom Cruise and actress Nicole Kidman attend the 'Jerry Maguire' New York City Premiere on December 6, 1996 at Pier 88, Chelsea Piers in New York City. (Photo by Ron Galella/WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 'Rent' Broadway Musical Performance on May 25, 1996 at the Nederlander Theatre in New York City. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 53rd Annual Golden Globe Awards on January 21, 1996 at Beverly Hilton Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend the 'Mission: Impossible' Westwood Premiere on May 20, 1996 at Mann Bruin Theatre in Westwood, California. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 11th Annual American Cinematheque Award Salute to Tom Cruise on September 21, 1996 at Beverly Hilton Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend 'The Portrait of a Lady' New York City Premiere on December 7, 1996 at the United Artists Theatre in New York City. (Photo by Ron Galella, Ltd./WireImage)
Actress Nicole Kidman and actor Tom Cruise attend the 20th Annual People's Choice Awards on March 8, 1994 at Sony Pictures Studios in Culver City, California. (Photo by Ron Galella, Ltd./WireImage)
Actor Tom Cruise and actress Nicole Kidman attend the 'Mission: Impossible II' Hollywood Premiere on May 18, 2000 at Mann's Chinese Theatre in Hollywood, California. (Photo by Ron Galella, Ltd./WireImage)
UNITED STATES - APRIL 25: Tom Cruise and Nicole Kidman at Universal Studios Theme Park in Los Angeles 1992 (Photo by Vinnie Zuffante/Getty Images)
UNITED STATES - APRIL 25: Tom Cruise and Nicole Kidman in Los Angeles in 1990 (Photo by Vinnie Zuffante/Getty Images)
369513 16: FILE PHOTO: Actors Tom Cruise, who stars in the film, and Nicole Kidman arrive at the premiere of 'Mission Impossible 2' May 18, 2000 at the Chinese Theater in Hollywood, CA. Cruise and Kidman, one of the Hollywood's best-known couples, announced February 5, 2001 that they are separating after more than a decade of marriage. (Photo by Chris Weeks/Liaison)
Tom Cruise and Nicole Kidman during 'Mission: Impossible 2' Los Angeles Premiere at Mann Chinese Theatre in Hollywood, California, United States. (Photo by S. Granitz/WireImage)
Nicole Kidman & Tom Cruise at the Golden Globe Awards on January 23, 1993 (Photo by Barry King/WireImage)
Coverage of the 72nd Annual Academy Awards Ceremony held at the Shrine Auditorium in Los Angeles on March 26, 2000. ^^^ÂÂ Tom Cruise and Nicole Kidman arriving at Shrine Auditorium for Oscars on 3/26/00. (Photo by Wally Skalij/Los Angeles Times via Getty Images)
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Kidman eventually remarried, tying the knot with country star 48-year-old Keith Urban in 2006. The two are one of the most romantic couples in the business, and the Australian star says she's learned a lot about maintaining a marriage the second time around.

"When you're older, you've been through things, you've made mistakes," she explains. "So, you come into it [a second marriage], still giddy, but wanting it to last. We always consider the 'us.' We say, 'Is this going to be good for us?' It's the simplest phrase, but it works."

Of course, she admits that her relationship with Urban hasn't always been the smoothest. But these days, the couple -- who celebrated their 10th anniversary in June -- are "stronger than ever."

"It was really up and down for the first three months," Kidman shares. "We've been through a lot for ten years. And we're stronger than ever. I say that while touching wood, and no way in a boastful way. I just say it with wonder -- absolute wonder."Kidman has two daughters with Urban, 8-year-old Sunday Rose and 5-year-old Faith Margarat, who was born via surrogate. She also has two children she adopted with Cruise, 23-year-old Isabella and 21-year-old Connor.

"My husband says I'm 'deeply maternal,'" she notes. "I like to take care of people. It brings me a lot of joy."

"Motherhood is about the journey," she adds. "There are going to be incredible peaks and valleys, whether you are an adopting mother or a birth mother. What a child needs is love."

NEWS: Keith Urban Shares First Photo He Ever Took With Nicole Kidman to Celebrate 10th Wedding Anniversary

ET spoke with Kidman and Urban in January at the Screen Actors Guild Awards, when they talked about how they make their marriage work.

PHOTOS: Keith Urban and Nicole Kidman together

37 PHOTOS
Keith Urban and Nicole Kidman together
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Keith Urban and Nicole Kidman together
NEW YORK, NY - MAY 29: Actress Nicole Kidman (L) and musical artist Keith Urban embrace onstage during Lincoln Center's American Songbook Gala at Alice Tully Hall on May 29, 2018 in New York City. (Photo by Mike Coppola/Getty Images for Lincoln Center)
NEW YORK, NY - MAY 29: Actress Nicole Kidman (L) and musical artist Keith Urban embrace onstage during Lincoln Center's American Songbook Gala at Alice Tully Hall on May 29, 2018 in New York City. (Photo by Mike Coppola/Getty Images for Lincoln Center)
NEW YORK, NY - MAY 29: Actress Nicole Kidman (L) and singer-songwriter Keith Urban attend Lincoln Center's American Songbook Gala at Alice Tully Hall on May 29, 2018 in New York City. (Photo by Mike Coppola/Getty Images for Lincoln Center)
NEW YORK, NY - APRIL 24: Musician Keith Urban and actor Nicole Kidman attend the 2018 Time 100 Gala at Jazz at Lincoln Center on April 24, 2018 in New York City. (Photo by Dimitrios Kambouris/Getty Images for Time)
LAS VEGAS, NV - APRIL 15: Nicole Kidman (L) and Keith Urban attend the 53rd Academy of Country Music Awards at the MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by J. Merritt/Getty Images)
LAS VEGAS, NV - APRIL 15: (L-R) Blake Shelton, Gwen Stefani, Nicole Kidman and Keith Urban attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/ACMA2018/Getty Images for ACM)
LOS ANGELES, CA - JANUARY 21: (L-R) Nicole Kidman and Keith Urban arrive at the 24th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 21, 2018 in Los Angeles, California. (Photo by Dan MacMedan/Getty Images)
BEVERLY HILLS, CA - JANUARY 07: Singer Keith Urban (L) and actor Nicole Kidman attend The 75th Annual Golden Globe Awards at The Beverly Hilton Hotel on January 7, 2018 in Beverly Hills, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - NOVEMBER 19: Actress Nicole Kidman (L) and singer/musican Keith Urban attend the 2017 American Music Awards at Microsoft Theater on November 19, 2017 in Los Angeles, California.(Photo by Jeffrey Mayer/WireImage)
NEW YORK, NY - NOVEMBER 13: Keith Urban and Nicole Kidman attend the 2017 Glamour Women of The Year Awards at Kings Theatre on November 13, 2017 in New York City. (Photo by Noam Galai/WireImage)
NASHVILLE, TN - OCTOBER 18: Recording artist Keith Urban and actress Nicole Kidman attend the 2017 CMT Artists Of The Year awards at Schermerhorn Symphony Center on October 18, 2017 in Nashville, Tennessee. (Photo by Mickey Bernal/FilmMagic)
LOS ANGELES, CA - SEPTEMBER 17: Nicole Kidman, Keith Urban arrives at the 69th Annual Primetime Emmy Awards at Microsoft Theater on September 17, 2017 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
TORONTO, ON - SEPTEMBER 08: (L) Nicole Kidman and Keith Urban attend 'The Upside' premiere during the 2017 Toronto International Film Festival at Roy Thomson Hall on September 8, 2017 in Toronto, Canada. (Photo by Kevin Winter/Getty Images)
NASHVILLE, TN - JUNE 07: (L-R) Carrie Underwood, Nicole Kidman and Keith Urban in the audience during the 2017 CMT Music Awards at the Music City Center on June 7, 2017 in Nashville, Tennessee. (Photo by Jeff Kravitz/FilmMagic)
NASHVILLE, TN - JUNE 07: Musician Keith Urban and actress Nicole Kidman attend the 2017 CMT Music awards at the Music City Center on June 7, 2017 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images for CMT)
NASHVILLE, TN - JUNE 03: Actress Nicole Kidman and Keith Urban attend the Stanley Cup Finals Game 3 Nashville Predators Vs. Pittsburgh Penguins at Bridgestone Arena on June 3, 2017 in Nashville, Tennessee. (Photo by Terry Wyatt/Getty Images)
CANNES, FRANCE - MAY 22: Keith Urban and Nicole Kidman depart after the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Gisela Schober/Getty Images)
CANNES, FRANCE - MAY 22: Nicole Kidman (L) and Keith Urban attend the official after party for 'The Killing of a Sacred Deer' at the Nikki Beach pop-up during the 70th annual Cannes Film Festival on May 22, 2017 in Cannes, France. Guests enjoyed Perrier Jouet. (Photo by David M Benett/Dave Benett/Getty Images for Nikki Beach)
LAS VEGAS, NV - APRIL 02: (L-R) Singer Keith Urban, actor Nicole Kidman, and singers Faith Hill and Tim McGraw attend the 52nd Academy Of Country Music Awards at T-Mobile Arena on April 2, 2017 in Las Vegas, Nevada. (Photo by Jeff Kravitz/ACMA2017/FilmMagic for ACM)
LAS VEGAS, NV - APRIL 02: Actor Nicole Kidman (L) and singer Keith Urban attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Jeff Kravitz/ACMA2017/FilmMagic for ACM)
Actress Nicole Kidman and husband Keith Urban arrive at the 23rd Screen Actors Guild Awards in Los Angeles, California, U.S., January 29, 2017. REUTERS/Mario Anzuoni
Actress Nicole Kidman and husband Keith Urban arrive at the 23rd Screen Actors Guild Awards in Los Angeles, California, U.S., January 29, 2017. REUTERS/Mario Anzuoni
Cast member Nicole Kidman and her husband Keith Urban pose at the premiere of the HBO television series "Big Little Lies" in Los Angeles, California U.S., February 7, 2017. REUTERS/Mario Anzuoni
Cast member Nicole Kidman and her husband Keith Urban pose at the premiere of the HBO television series "Big Little Lies" in Los Angeles, California U.S., February 7, 2017. REUTERS/Mario Anzuoni
52nd Academy of Country Music Awards - Arrivals - Las Vegas, Nevada, U.S., - 02/04/2017 - Actress Nicole Kidman and musician Keith Urban. REUTERS/Steve Marcus
52nd Academy of Country Music Awards - Arrivals - Las Vegas, Nevada, U.S., - 02/04/2017 - Actress Nicole Kidman and musician Keith Urban. REUTERS/Steve Marcus
70th Cannes Film Festival - Screening of the film "The Killing of a Sacred Deer" in competition - Red Carpet Arrivals - Cannes, France. 22/05/2017. Cast member Nicole Kidman and her husband Keith Urban pose. REUTERS/Eric Gaillard
NASHVILLE, TN - JUNE 10: Nicole Kidman and Keith Urban attend the 2015 CMT Music awards at the Bridgestone Arena on June 10, 2015 in Nashville, Tennessee. (Photo by C Flanigan/WireImage)
NASHVILLE, TN - JUNE 10: Nicole Kidman and Keith Urban attend the 2015 CMT Music awards at the Bridgestone Arena on June 10, 2015 in Nashville, Tennessee. (Photo by C Flanigan/WireImage)
CANNES, FRANCE - MAY 19: Keith Urban and Nicole Kidman attend the Premiere of 'Inside Llewyn Davis' at The 66th Annual Cannes Film Festival on May 19, 2013 in Cannes, France. (Photo by Tony Barson/FilmMagic)
NASHVILLE, TN - JUNE 05: Musician Keith Urban and actress Nicole Kidman attend the 2013 CMT Music Awards at the Bridgestone Arena on June 5, 2013 in Nashville, Tennessee. (Photo by Jeff Kravitz/FilmMagic)
MELBOURNE, AUSTRALIA - JUNE 13: Actress Nicole Kidman and Keith Urban attend the Celebrate Life Ball at Grand Hyatt Melbourne on June 13, 2014 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)
NASHVILLE, TN - NOVEMBER 04: Actress Nicole Kidman and singer-songwriter Keith Urban attend the BMI 2014 Country Awards at BMI on November 4, 2014 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images for BMI)
Australian actress Nicole Kidman (L) and her husband musician Keith Urban (R) kiss as they pose for pictures on the red carpet upon arrival for the world premiere of 'Paddington' in London on November 23, 2014. AFP PHOTO / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
LOS ANGELES, CA - FEBRUARY 08: (EDITORS NOTE: Image was processed using digital filters.) Musician Keith Urban and actress Nicole Kidman attend The 57th Annual GRAMMY Awards on February 8, 2015 in Los Angeles, California. (Photo by Christopher Polk/WireImage)
CENTURY CITY, CA - JUNE 16: Honoree Nicole Kidman (L) and recording artist Keith Urban attend the Women In Film 2015 Crystal + Lucy Awards Presented by Max Mara, BMW of North America, and Tiffany & Co. at the Hyatt Regency Century Plaza on June 16, 2015 in Century City, California. (Photo by Mark Davis/Getty Images for Women in Film)
HOLLYWOOD, CA - MAY 13: Singer Keith Urban and actress Nicole Kidman attend the 'American Idol' XIV grand finale at Dolby Theatre on May 13, 2015 in Hollywood, California. (Photo by Tommaso Boddi/WireImage)
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"Just want it more than anything," Urban said. "That's it, isn't it?"

"Yeah, prioritize it," Kidman echoed. "Also, as much as we love each other, we really like each other. I'm speaking for myself, but that is a huge part of being married. Always, the first person I want to share anything with is him. It's true."

Watch the sweet interview below:

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