One of Hollywood's most beloved and rock-solid couples has to be Nicole Kidman and Keith Urban. The two have been together for 13 years this year and are still so unbelievably in love with each other. Their relationship hasn't been perfect, but then again the best ones never are. It has been a journey full of love and discovery.

While there's not much - if any - negativity surrounding the two, there are some things that many wouldn't guess about their relationship. It's a special one to say the least, and we're happy to share what we know about this king and queen of country music and drama.

Here are 20 things that might be surprising about these two! If nothing else, they make us believe that true love really does exist out there.

20 While Keith Is Obviously Musical, Kidman Isn't Too Shabby

The two have been scoped on more than one occasion singing with each other, including car karaoke! Keith jokes about his wife, saying that if she heckles him, he makes her sing with him...as he did at an event they attended for Spotify.

19 Kidman Made A Special Country Music CD To Play During Labor

While the CD didn't include any of her singing, it did include some of Keith's music. It's the sweetest thing to sing to your child, and playing songs for a baby, which have been chosen with love, as soon as the infant enters the world, is truly something else.

18 They Didn't Begin Dating Immediately

Funnily enough, the couple didn't begin dating immediately. It took Keith four months to ask Nicole out, but they did know each other prior to that. While she claims there were no intense sparks, it's clear that there was still something there. Enough to build a romance on, anyway!

17 But They Did Meet At A Gala For Aussies

Although Nicole Kidman was born in Hawaii, she's still Australian and so is Keith. This is something they both have in common and care deeply about, and they even have a home in Sydney. They met at a G'Day LA event and began dating several months later.

16 They Broke Tradition With Their Wedding Gifts

Typically at weddings, the bride and groom's family and friends will offer gifts and/or cards when they attend the ceremony. In stark contrast to tradition, both Nicole and Keith requested that their guests donate money to the Sydney Children's Hospital rather than using it for gifts.

15 Their First Meeting Wasn't 'Earth Shaking' According to Kidman

Although they joke about it, Nicole claims that Keith definitely wasn't in love right off the bat and that it wasn't 'love at first sight'. Obviously, there was something there, and although it wasn't 'earth-shaking', it would definitely prove to be a love that would transcend the years.

14 Kidman Didn't Mind Moving Fast And Getting Married Early

Nicole told Us Weekly in an interview that she doesn't mind moving quickly as far as marriage goes. For her, it's better to marry someone and get to know them while married, rather than taking the long road to doing so. She knew she wanted to marry Keith after about a month!

13 Urban Carried A Secret That Initially Put A Strain On Their Marriage

Keith had a substance issue that definitely put a strain on their relationship. While he checked himself into rehab immediately after they were married, he claims Nicole was a huge driving force behind that. While it was a tremendous difficulty for her to overcome, he didn't want to lose everything.

12 They Were Admittedly Both Very Lonely Individuals

The two have claimed that they believed they were both very lonely prior to meeting each other. It's interesting how, despite being surrounded by so many fans and the big lights of Hollywood, you can still feel so alone. It seems these two really found their soul mates in each other.

11 The Two Feel As Though There Was A Powerful, Driving Force To Their Love

While some believe that love is simply the recognition of something we like in another person, others believe the aspect of fate has a big role to play in it. Both Nicole and Keith believe that there was a driving force behind their love and that they didn't just end up together by accident.

10 Neither Of Them Uses Texts To Contact The Other

An interesting tidbit about their relationship is that neither texts or email have a place in their world. The two aren't likely to contact each other unless it's via telephone. Nicole says that if they do text, it will usually be one of them expressing a need to hear the other's voice.

9 But They Will Send One Spicy Text Occasionally

According to Keith, the couple has been known to send some pretty steamy texts maybe once a year. Understandably, they both miss one another when one or both of them are away for work, and they are human. Texting is good for at least one thing, it seems!

8 Marriage Will Always Be Their Number One Priority, Above All Else

This is how the two claim they've done so well up to this point. Their marriage will always come first, before their personal wants, as well as their careers. When you find someone you truly want to spend forever with, it's easy to put their needs ahead of everything else.

7 From Speeding Away At 90 MPH To Talking Out Their Problems: They Both Learned

Whereas Keith used to speed away from the house in his car at 90 MPH when he didn't understand what Nicole wanted, he has since learned to anticipate her needs. He says that a lot of it is just knowing when she needs him to be there for her, which is what his song 'Fighter' is about.

6 Urban Is Extremely Supportive Of His Wife And Understands Creative Liberty

Nicole Kidman has taken on some pretty intense roles, as is the life of such a successful and talented actress. However, it's just as important for her to have a husband who supports her, which Keith does flawlessly. As such, she supports his music career just as much.

5 He Was Also Very Sensitive To Kidman's Role In Big Little Lies

In an interview with W Magazine, Nicole said that her husband was very sensitive when it came to her role in Big Little Lies. She claimed it was tough for him to watch, considering how much her character had to deal with from her on-screen husband. We're guessing it would be tough for anyone to watch their partner go through that, acting or not.

4 Kidman Relies On Urban To Be Her Emotional Support Post-Filming

Just as Keith dealt with a bit of emotion when watching his wife take on a challenging role, she also depended on him to support her afterwards. She says that she would come home and simply just need him to be there for her, as it was both emotionally and physically taxing.

3 The Two Have Specific Stances For Taking Photos

Since Nicole is taller than Keith (which is obvious in some photos of the couple), the two have perfected their stance. Keith will either wear shoes that give him some extra height, or Nicole will alter her stance to match his height. It could mean slouching a bit, leaning her head in, or simply wearing longer dresses to hide how tall she is.

2 They Share One Mantra

'Nothing to hide and everything to protect' is the couple's constant mantra. It's a good thing to believe in and truly describe their relationship to a T. The two have fought for what they have and, just like anyone else, they're human and keen on protecting what they've built.

1 The Two Encourage Leaving One Another's Comfort Zones

Whether it's singing on stage or taking on a new role, both Keith and Nicole are constantly encouraging each other. The support they have for one another is truly admirable and it's why they're able to experience so many different things, despite their own personal fears.