The actors have been married for seven years and have two young children together. Yet, they’re rarely photographed together.

WATCH: Here are some of the celebrity couples we didn’t know existed! Post continues after video.

That said, their relationship story reads like a plot line straight from a movie. Specifically, their moviesNo Strings AttachedandFriends With Benefits.

From meeting as teenagers and having their first kiss televised, to the relationship breakups that led them to each other, keep scrolling for a deep dive into Ashton Kutcher and Mila Kunis’ ultra private relationship.

Ashton Kutcher, Mila Kunis andThat 70s Show.

Like most celebrity couples, Kutcher and Kunis (which sounds like it should be the name of their own show) met at work on the 1998 TV seriesThat 70s Show.

Their characters Jackie Burkhart and Michael Kelso were an on-screen couple – as Kutcher said in a 2017 interview onThe Howard Stern Show, their “first kiss was memorialised on a TV show”.(You can watch the very scene below.)

Both have always said there was nothing going on between them while they were working together.

“I say this not as a joke, but [he] literally did my chemistry homework. I thought he was fine, he was a nice guy, we worked together and sometimes he’d drop me off at home,” Kunis, 37, told NBC’s Sunday Sitdown With Willie Geist in 2018.

“It wasn’t until years later at an awards show I saw him again. He just turned around and it was literally like if we were in a movie, the music would’ve started playing and the violins would’ve gone. I think for the first time ever he took my breath away — I was like f**k, he’s good-looking.”

Kutcher, 43, added, “We’ve known each other for 20 years. I was 19, she was like 14. I did her chemistry homework for her. I think I was her first kiss, like, on the show.”

“It was really weird. I was like, ‘Isn’t this illegal? Like can I — am I allowed? It was really awkward because I’m like a 19-year-old kid. She was like my little sister. I wanted to make sure she was OK.”

Ashton Kutcher and Mila Kunis’ previous relationships.

AfterThat 70s Show, Kutcher and Kunis went their separate ways, but stayed in touch online throughout their twenties.

A then-18-year-old Kunis started datingHome Alonechild star Macauley Culkin, who was 21 at the time. They dated for eight years, and managed to keep their relationship private from the media.

In interviews, Kunis has said they “grew up together,” but that their 2011 breakup was her fault, despite both their reps saying it was amicable.

“It was a horrible, horrible breakup… I f**ked up," she told Dax Shephard on his Armchair Expert podcast in 2018.

“I was an a**hole in my 20s and I’ll be the first to admit it. And that’s something that took me a long time to come out and be like, ‘Yeah, you know what, I was a d**k,’ and accept it and I own it now.”

“It’s f*cked up what I did and it’s f*cked up how I did it. When I got to be a single I said, ‘I just need to figure myself out.’ I genuinely need to know why I did what I did, and, like, regroup myself as a human being.”

Ashton Kutcher dated Mad Men

He also was meant to have a first date to a post-Grammy after party with a woman named Ashley Ellerin in February, 2001. However, he was running late, and when he got to her place, she didn’t answer the door.

“I figured I had screwed up – I had showed up too late,” Ashton later said. In fact, Ellerin had been murdered that night by the “Hollywood Ripper”, Michael Gargiulo.

Then, in 2003, Kutcher met Hollywood actress Demi Moore. He was 25, and she was 40, and the mother of three daughters with ex-husband Bruce Willis. The oldest, Rumer, was just 10 years younger than Kutcher.

They married in a kabbalah ceremony in 2005, with Willis among the guests. During their six-year marriage, Moore and Kutcher fell pregnant before miscarrying. In Moore’s recent memoir, she opened up about their somewhat toxic relationship.

“When he expressed his fantasy of bringing a third person into our bed, I didn’t say no. I wanted to show him how great and fun I could be," she wrote on their alleged threesomes.

In 2011, Moore announced she was ending the marriage, following allegations that Kutcher had been unfaithful. Kutcher filed for divorce in 2012, and has remained tight-lipped on the details of their breakup ever since. In 2013, he toldElle, "There are some things that are better left private"

The story of how Kutcher and Kunis finally got together is one they've both told the media many times.

Both had just finished working on two films that were basically the same movie - he,No Strings Attachedwith Natalie Portman, and she,Friends With Benefitswith Justin Timberlake.

Both movies were released in 2011 and centred on plot lines involving casual sex between friends that turns into something more. So, they decided to live out their fictional characters.

"We lived our movies out. We were like, let's just hook up. Let's have fun. We're both single. We both trust each other. Everything's great," Kunis told The Late Late Show With James Corden .

"Just like our movies, one of us caught feelings. We were both seeing other people, so the second I started caring that he was seeing somebody else in that regard, I felt like I got punched in the gut, literally overnight.

From there, things moved pretty quickly. So quickly, Kunis has been quoted as saying: "Six months later we're, like, married and had a kid."

In 2014, the couple welcomed their first child, daughter Wyatt. The following year, Kutcher and Kunis married in a secret ceremony on a ranch outside of LA. Kutcher told Ellen DeGeneres they used social media to keep paparazzi from finding their location.

"I was, like, posting things on social media that were in different locations because we didn't want to be screaming our vows at each other and be like, 'Forever! Did you say never?' We didn't want to do that thing, so we went really under the radar with it."

Kunis also spoke about the wedding with W Magazinein 2014, saying: “I never wanted to get married. From the age of 12, I prepared my parents for no marriage. Then things changed — I found the love of my life. Now my theory on weddings is: Don’t invite anyone. Do it privately and secretly. My parents are OK with that.”

when it comes to

"You know, I've learned the hard way how valuable privacy is," he toldElleof their decision to maintain their privacy.

"And I've learned that there are a lot of things in your life that really benefit from being private. And relationships are one of them. And I am going to do everything in my power to have this relationship be private.

Whilst the pair are in the public eye, it's not often we get a glimpse into their life together. This week, Kutcher shared a photo of his wife on Instagram with the caption, "Luckiest man alive."

Kunis and Kutcher have two kids together, six-year-old Wyatt Isabelle and their four-year-old son Dimitri, who was born in 2016.

In 2022, during an interview on Armchair Expert podcast with Dax Shepard, the couple shared that they don't bathe their kids every day.

"When I had children, I also didn’t wash them every day," said Kunis. "I wasn’t that parent that bathed my newborns – ever."

Kucher added, "Now, here’s the thing. If you can see the dirt on them, clean them. Otherwise, there’s no point."

The pair also said they don’t wash their own bodies with soap every day.

"I didn’t have hot water growing up as a child so I didn’t shower very much anyway," Kunis explained.

"I wash my armpits and my crotch daily, and nothing else ever," added Kutcher.

"I do have a tendency to throw some water on my face after a workout to get all the salts out."

Of the kind of parents they are, Kunis has previously said she and Kutcher are quite goofy with their kids.

"I think that’s just [us] being idiots. We’re very comfortable with ourselves acting a fool at home, but maybe that comes from the idea of being comfortable in your own body, and in your own skin, and in your mind and not having a fear of making