Miley Cyrus was Cody Simpson's childhood crush, and now they're dating. Here's a timeline of their relationship.

"Miley Cyrus has always been my childhood celebrity crush. I knew all the words to her songs. I'm not going to lie. I'm not ashamed about it at all," he said during an interview with Fuse.

He continued, "I was a big Miley Cyrus fan. I think she will be forever the most dateable Disney star."

In a Rolling Stone article, Cyrus said that Simpson contacted her to create art for his song "Flower." The cover shows one white flower against a black backdrop.

"[I was] just trying to do something simple for him," she said, adding, "I just wanted something where people didn't have a stereotypical idea of what he was and could just look at the song for what it is, because it's a f---ing epic song."

She also gushed about him in the interview, saying, "He's a super f---ing cool guy and an epic guitar player and singer."

"We get along super well. She's the chillest — she's the coolest girl I've ever met here in LA. She doesn't have insecurities or stuff like that. She just rolls around riding a three-wheeler motor bike. She's so sick," he said during an interview on the Zach Sang show.

When asked what he's learned from the former Disney Channel star, he said, "It's cool to see her have such a relaxed approach and that inspires me to not care as much. "

During the interview, the singer credited his family for keeping him grounded and also mentioned Cyrus's role in his climb to fame.

"Miley is one of my best friends and she helps with some of that transitional stuff – trying to escape your childhood. She's super open-minded and I'm working on becoming more like that," Simpson said.

He shared the photo on Instagram and wrote, "Haha it's so lit @mileycyrus see ya tomorrow boys are cruising!"

Although he didn't share any photos from the next day, Cyrus did end her Milky Milky Milk Tour at the Wiltern Theatre in Los Angeles on December 19. It's unconfirmed whether or not Simpson saw her then.

After her splits from husband Liam Hemsworth and reality star Kaitlynn Carter, Cyrus was spotted with her longtime friend Simpson. In the video, Cyrus leans over and kisses Simpson on the lips at Backyard Bowls in Los Angeles.

Following backlash and public scrutiny for moving on so quickly after her past breakups, Cyrus defended herself on Twitter.

"I know the public feels invested in my past relationship because they felt like they saw it thru from the beginning," she said, adding, "But I am grown now and make choices as an adult knowing the truth/details/reality."

She also posted photos of Simpson on her Instagram story, seemingly confirming that she was seeing him. One of the photos was a screenshot of TMZ's video, on which Cyrus wrote, "Can a girl not get a f---ing acai bowl and a morning makeout session in peace ?!?!"

Cyrus also shared a black and white photo of Simpson and wrote, "22, Australian (my type), Abs, Hot Girl Fall," adding check-mark emojis after each line.

He's seen kissing Cyrus in the black and white photo, and her arm is wrapped around his neck.

The Australian singer is the author of "Prince Neptune," his debut poetry collection.

He shared words to his since-deleted poetry account's Instagram story that read, "the moon's souvenir, the boulevardier, a ballerina on the promenade, we open our curtains to the domesticated world for a natural hour, spinning Elvis records and making love in the soft jewelled morning."

After reading the poem, fans speculated that the entry was inspired by Cyrus.

Simpson shared a topless photo to his Instagram, and the "Yummy" singer commented, "Ur body is a wonderland" and added, "Double date?"

The "Home to Mama" singer replied, "text me."

Shortly after they began dating, Cyrus was hospitalized for tonsillitis. In a series of photos on her Instagram story, she showed Simpson standing at her bedside holding a guitar and roses.

The "Can't Be Tamed" singer also posted a video of Simpson serenading her.

She wrote, "this sweeeeeet guy came to visit at the hospital and sang the sweeeeeetest song he just wrote for me," adding a black heart emoji.

Cyrus continued, "It's too special to only be heard in full by my ears so I am currently pressuring him to DROP IT next week... & it's working."

Alli confirmed her older brother's relationship with Cyrus while speaking to the Daily Mail.

"It seems like they're very happy and very in love," she said, adding, "Miley is posting a lot [on social media] and so is Cody so it seems serious."

"I'm very happy. We are very, very happy," he said at the Tiffany & Co. Mens Launch in Los Angeles. He continued, "She's creative. She's very passionate about what she does, and I'm very similar in that sense. That's why we get along so well."

The singer went on to talk about the healthy nature of their relationship.

"We just have a ball, and that's the most important part of a relationship, you know?" he said.

"The reason why it hasn't been a really crazy sudden thing is just because we've been friends for so long," he added, explaining that they "found each other again in a space where we're both not partying, working real hard, and it just keeps things healthy and it's good."

Simpson and Cyrus cuddled in bed together and took a video with the "Joker" filter on their faces. After looking directly at the camera, they proceeded to touch tongues.

Both Cyrus and Simpson debuted their new tattoos, which were done by Nico Bassill. The "We Can't Stop" singer opted for a rock 'n' roll heart on her arm, and Simpson chose a skull on his chest.

Simpson posted the selfie of himself to his Instagram story. While many speculated that he may be moving in with Cyrus, neither party confirmed that they were officially living together.

In the song, the musician sings, "Crystal dream / Cali queen / Radiant hand / Vibrant sand / I'm shot / It's a golden thing she's got."

Simpson wrote and played the song for Cyrus while she was in the hospital, according to People. He added that she encouraged him to release it to a wider audience.

"She was like, 'If you don't put this s--- out, I'm putting it out on your behalf for you. I'm getting your Spotify login and doing this s--- myself,'" he told People.

The couple continued their streak of PDA-filled posts on social media, and Cyrus shared a photo of herself with her hand reaching down Simpson's pants. The photo has since been deleted.

Simpson and Cyrus also did an Instagram livestream, during which Cyrus said, "There are good men out there guys, don't give up. You don't have to be gay. There are good people with dicks out there, you just gotta find them. You gotta find a dick that's not a dick, you know what I mean?"

The singer immediately received backlash for her comments, which implied that sexuality is a choice.

She tweeted an apology that said, "I was talking s--- about sucky guys, but let me be clear: YOU don't CHOOSE your sexuality. You are born as you are. It has always been my priority to protect the LGBTQ community I am a part of. Happy Monday!"

The singer posted an Instagram selfie of herself captioned, "New. Life. Who. Dis."

The same day, Cort Jewellery reposted Cyrus' photo and wrote, "When you wake up and freak out to see @mileycyrus wearing the custom ring you made @codysimpson."

Lindsay and Simpson have a history beyond his relationship with her sister. She was a judge on Fox's "The Masked Singer," which Simpson won.

In a since-deleted Instagram photo of Simpson and Aliana Lohan, Lindsay wrote, "When you realise you failed. And you settle for less @codysimpson. Family is everything you won the masked singer but you lost on your future.

The couple was photographed standing up and kissing in the middle of Casa Vega in California. TMZ also shared a picture of Cyrus and Simpson with a group at Universal Studios.

Simpson and Cyrus showed off their Halloween costumes in an Instagram video. Cyrus wrote, "My Idol" and added a black heart emoji.

Her younger brother Braison married Stella McBride in Tennessee.

Although the photos have since been deleted, Cyrus shared a series of Instagram pictures from the wedding and wrote, "My baby brother got married on the most stunning sunny Tennessee day standing on top of the same hills where we grew up playin.... I love you Braison. So happy for you & Stella."

Multiple tabloids reported that the couple had parted ways, but Simpson shared an Instagram story showing that his phone background was a picture of young Cyrus smiling.

He wrote, "Happy birthday baby. Thanks for being you" and shared a black and white video of the couple laughing together.

When he was asked whether or not he'd like to make music with Cyrus while attending the 2019 GQ Men of the Year party, he said, "Yeah definitely. We're looking at it."

The musician added, "We are getting all the songs down and then seeing who would make sense for what. It's going to be cool. It's going to be pretty much a rock album. A lot of guitar."

The Australian musician was spotted with Murray in New York City around the same time that Cyrus posted a clip of "Sad Christmas Song," and fans wondered if the couple was ending their relationship.

"A sad Christmas song I wrote a few years back right before the holidays. Was feeling like s--- cause I couldn't be with the one I loved," she wrote.

A source told E! News they spotted Cody "dancing behind the DJ booth at Little Sister with a group of girls," during which one of the women "kissed him on the lips."

However, Simpson's agent released a statement to E! News denying the claims.

"There is absolutely no truth to this story. Cody went out with a friend and all the rest is fabricated. Period," his agent said.

Following the breakup rumors, Simpson shared a video of Cyrus leaning away from him as he tries to kiss her. He eventually leans back in his chair and sips a cup of tea.

"Happy birthday to my best friend in the entire world @codysimpson," she wrote with skeleton emojis. She added, "I love you and our pirate life!"

The "Wrecking Ball" singer also shared a photo of the couple in face masks and wrote, "Happy birthday to my favorite human to get weird with on the entire earth."

Cyrus also bought him a personalized vintage doctor's bag with "Prince Neptune," the name of his poetry collection, written on it.

"We have a different idea of 'werking out,'" Cyrus wrote on a photo of her laying on a table while Simpson exercises in the background.

During an episode of "The Kyle and Jackie O Show," Simpson spoke about his relationship with Cyrus.

"Yeah, it's great. We're amazing. No complaints," he said.

When he was asked about whether or not they were considering having children anytime soon, Simpson replied, "None yet, mate," adding, "I'm cautious. I'm a careful guy."

"Superbowl supercuts," Simpson captioned the Instagram photo.

He told The Sunday Telegraph, "I would like to return back in Australia for sure," adding, "I miss Australia a lot. I would like to come back more. I will always have a home base in LA, but Australia will always be No. 1."

When he was asked if he'd like to raise his children in his home country, he replied, "Absolutely, yes."

During his appearance on "Today Australia," Simpson was asked whether there was any truth to reports that he and Cyrus were expecting their first child together.

"Oh, yeah," he said, adding, "I've been pregnant for years, apparently."

The hosts then asked how he handled life in the spotlight.

He said, "I mean, you just gotta take it in stride and, you know, what I try to do is just focus on my work and what's important to me, and for me it's my work and my music, so. The rest just kind of comes along with it. So, it's all part of it and something you just have to take in stride and be cool with."

Cyrus and Simpson went to the tattoo parlor to get matching ink of a trident symbol in anticipation of "Prince Neptune," which was released on April 7. They went to the same artist, Nico Bassill, as they did in October 2019.

After the ink was completed, Bassill quoted Simpson's poetry and wrote, "Some mornings it's like the sun rises only for her," adding, "Thanks again @codysimpson and @mileycyrus go pick up your copy of Cody's new book, Out April 7th."

The "Prince Neptune" author celebrated the six-month mark with Cyrus by posting a black-and-white photo of the singer to his Instagram story.

"6 months with you is worth a lifetime with anybody else," he wrote, adding, "I love you."

Simpson was one of the guests on Cyrus' show called "Bright Minded," an Instagram livestream she created to spread positivity during the coronavirus pandemic.

Cyrus asked him about his poetry collection, titled "Prince Neptune," and he recited a poem he wrote for her.

"In the ancient night, she flies once more back to her home in the stars. I try to chase her there but fall short because I cannot breathe up that high in the radiant heavens where she lingers. I can only admire her from below, humble, starry-eyed poet with the desire for that which is most beautiful. And she is most beautiful. All other sleep in winter forests, but she is the one who swims in the sun and doesn't burn up," he said.

The singer gushed about the poem and responded, "Babe! I'm freaked! I'm the most beautiful?"

Simpson smiled and answered, "You're the most beautiful, babe."

Cyrus shared a photo of Simpson with the makeup to her Instagram story and wrote, "I. Beat. That. Face." The makeover appeared to be for a project with Mert Alas, who originally posted a series of photos of the couple.

Simpson shared an Instagram video of the finished look, and Cyrus commented, "Biggest my type ever."

The couple teamed up to show off a choreographed dance routine on TikTok. In the video, Cyrus dons a blue string bikini, and Simpson wears swim trunks.

"If we can't get back to work..... let's get back to WERK," Cyrus captioned the post.