Take a look back at the ways stars like Ben Affleck, Ariana Grande, Megan Fox, JoJo Siwa and more have made their relationships "Instagram official," starting with this Australian couple… Actor Liam Hemsworth shared a photo of his girlfriend, model Gabriella Brooks on Instagram for the first time ever on June 10, 2021. The couple went Instagram official in a selfie Liam took at the Gold Dinner at Australia's Sydney Airport that also included brother and sister-in-law Chris Hemsworth and Elsa Pataky and family friend Luciana Barroso Damon. "Fantastic night raising much needed funds and awareness for one of the most important and challenging issues, children's mental health. Thank you @itsmondotcom for hosting the evening and all you do for the Sydney children's hospital @sydney_kids #golddinner," Liam captioned the snapshot. He and Gabriella were first romantically linked in December 2019.
Now keep reading for more famous couples' Instagram debuts…
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On May 1, 2021, Kat Dennings made her relationship with rocker Andrew W.K. public. Two days after the "WandaVision" actress took to Instagram to share a slideshow of photos of the music star — which she captioned with a simple black heart emoji — she posted this loved-up selfie. (It's unclear when, exactly, they became an item.) Two weeks after going Instagram official, they announced their engagement.
On April 5, 2021, Shailene Woodley took to her Instagram Story while in a car with fiancé Aaron Rodgers to urge fans to tune in to watch him guest host "Jeopardy!" that night. "This guy right here is super sexy, super attractive … just shaved his neck this morning. Has a little man bun growing. … This guy is hosting 'Jeopardy!' tonight!" she said as she touched him, simultaneously flashing her engagement ring. Later the same day, the Green Bay Packers quarterback and the "Big Little Lies" star appeared in an Instagram Live video on his account (pictured) to talk about his first game show hosting night. "Day 1 Jeopardy Recap 10 questions about life and jeopardy hosted by @shailenewoodley," Aaron captioned the clip. Aaron and Shailene quietly started dating and got engaged in 2020.
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Two weeks after coming out as a member of the LGBTQ+ community, YouTuber and singer JoJo Siwa introduced her new girlfriend, Kylie Prew, to her social media followers with a Feb. 8, 2021, photo slideshow post on Instagram. "After being my best friend for over a year, January 8th 2021 I got to start calling this exceptional human my Girlfriend… and Since then I've been the happiest I have ever been! She seriously is the most loving, supportive, happiest, protective, and just the most beautiful perfect person in the world. And I get to call her mine! Happy one month to my girl! I love you more and more everyday!" JoJo captioned the pics, including this one.
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Three days after ex Scott Disick went Instagram official with his new love (more on that next), reality TV star Kourtney Kardashian took her romance with blink-182 drummer Travis Barker to Instagram when she posted a photo of them holding hands on Feb. 16, 2021. Travis shared the same sweet image on his Instagram Stories the same night. According to early 2021 reports, after being friends and neighbors for years, Kourt and Travis started dating in late 2020.
After several months of dating, reality TV star and Kourtney Kardashian ex Scott Disick posted two photos of himself and girlfriend Amelia Gray Hamlin — a model who's one of Harry Hamlin and Lisa Rinna's daughters — on his his Instagram Story on Feb. 13, 2021. Just in time for Valentine's Day!
Justin Hartley and his girlfriend, soap star Sofia Pernas, made their big social media debut on New Year's Eve in 2020. "Sayonara 2020, it's been real. Happy New Year from our quarantine den to yours," the actress captioned this selfie. Justin, meanwhile, captioned a black-and-white selfie, "Last minutes of 2020 here in LA. Bring on 2021! Happy New Year!"
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People magazine confirmed in December 2020 that singer Lana Del Rey had quietly gotten engaged to former The Johnsons and Stereo Skyline musician Clayton Johnson. The pair, who got together in 2020, met on a dating app, a source told the magazine. They made their Instagram debut as a couple on Clayton's page on Feb. 5, 2021, with a selfie snapped by the Grammy nominee that Clayton captioned, "Happy birthday to me."
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Ariana Grande made her relationship with Dalton Gomez Instagram official on June 25, 2020 — the day before her 27th birthday. "Almost 27," she captioned a slideshow of photos including a selfie that showed her snuggled up next to the high-end real estate agent. They got engaged six months later.
Machine Gun Kelly made his romance with Megan Fox Instagram official on July 28, 2020. "Waited for eternity to find you again," he captioned a mirror selfie with the actress. The following week, she also made their relationship Instagram official, captioning a different black-and-white mirror selfie, "Achingly Beautiful Boy… My heart is yours."
Ana de Armas made her relationship with Ben Affleck Instagram official in honor of her 32nd birthday on April 30, 2020. "Thank you all so much for the birthday wishes and love! Cheers to another great year," she captioned a slideshow from her desert b-day bash including a selfie with the Oscar winner. They called it quits in early 2021.
Demi Lovato made her relationship with Max Ehrich Instagram official on May 28, 2020. The singer-actress shared a slideshow of four photos of herself and the former soap star canoodling in a swimming pool, which she captioned with an acronym for "I love you so f****** much, it's actually insane." They got engaged two months later and then called it quits two months after that.
Before her ill-fated engagement to Max Ehrich, Demi Lovato dated Austin Wilson. They made their brief relationship Instagram official on Nov. 12, 2019. "My [heart]," the singer-actress captioned a mirror selfie showing the male model kissing her on the cheek. Austin also flaunted the new romance on Instagram, captioning a PDA-packed mirror selfie with Demi, "My Love."
Chrishell Stause made her relationship with "Dancing With the Stars" pro Keo Motsepe Insta official on Dec. 3, 2020. "The internet has absolutely zero chill. So I guess you saw this already, but I'm just gonna leave this here," she captioned this PDA-packed photo with her beau, who posted the same shot on his Instagram Story earlier that day.
Steve Kazee made his relationship with Jenna Dewan Instagram official in honor of her 38th birthday on Dec. 3, 2018. "Happy Birthday Jenna! Somehow it feels like my birthday over and over again because I keep getting the gift of you every day," he adorably captioned a shot of four photo-booth pictures with the dancer-actress. They got engaged in early 2020 and welcomed a son, Callum, a few months later.
Nina Dobrev made her rumored romance with Shaun White Instagram official on May 28, 2020. "Adding to resume: hairdresser," she captioned a slideshow showing off the haircut she gave the Olympic snowboarder. (He also shared a video of the actress taming his mane.)
Teresa Giudice made her relationship with her new boyfriend, Luis "Louie" Ruelas, Instagram official on Dec. 22, 2020. "The BEST thing that came out of 2020," she captioned a photo of herself and her beau cuddled up at a restaurant.
Olivia Munn made her relationship with Comcast heir Tucker Roberts Instagram official on Nov. 2, 2019 — nearly a year after they were first linked. "Happy Halloween from Judy & Jesse Gemstone," the actress captioned a slideshow of photos of herself and her then-boyfriend dressed up as characters from HBO's "The Righteous Gemstones." Sadly, it wasn't meant to be: They reportedly called it quits not long after that.
On Oct. 3, 2020, Chrissy Metz unveiled her new boyfriend, Bradley Collins, on Instagram in honor of National Boyfriend Day. "Happy #nationalboyfriendday to my dreamboat! Bradley, from the first moment I laid eyes on you I wanted and needed to know you. Now I feel so lucky to love you. You can #Collinsmesmitten for sure! Thank you for being the absolute wonder that you are, I love you," she captioned a slideshow of photos including this smiley selfie.
On Jan. 15, 2021, Meghan King debuted her new boyfriend, Will Roos, on her Instagram Story. "We met as a love interests and that fizzled into friends. Obviously now that designation has shifted. Welp, now here we are. Sometimes things happen in a funny way," the former "The Real Housewives of Orange County" star wrote of her "friend-turned-boyfriend."
And here's how Meghan King introduced her last boyfriend on Instagram: On May, 27, 2020, she shared a shot of herself posing with entrepreneur and "Life Uncharted" podcast host Christian Schauf and his dog. "I guess if it's in [People magazine], it must be true… I'll just say this: I'm happy and looking forward to writing my next chapter," she wrote in the caption, confirming a People magazine report about her relationship status.
On July 11, 2020, Skylar Astin made his relationship with Lisa Stelly Instagram official by sharing a photo of himself and the mother of three canoodling in a swimming pool. A day earlier, Jack Osbourne's ex-wife, who founded the Fancy Sprinkles dessert embellishments brand, first announced they were dating by sharing a photo of herself smooching the "Zoey's Extraordinary Playlist" star. She joked in the caption, "Is that a bottle of mini champagne in your pocket or u just happy to see me @skylarastin?"
Bethenny Frankel made her relationship of a few months with Paul Bernon Instagram official on Christmas in 2018. "Bye bye Dominican Republic. What a beautiful country of beautiful people. #healingretreat #feliznavidad," she captioned a slideshow of two photos, including this selfie. Two years later, Bethenny announced that she and Paul had called it quits, but they sparked reconciliation rumors in early 2021.
Sam Smith and Brandon Flynn made their relationship Instagram official on Dec. 21, 2017, nearly three months after they were first linked. The "13 Reasons Why" star shared a photo of himself and the singer wearing travel neck pillows featuring unicorn hoods, which he captioned, "Rare sighting in London." Sadly, their romance proved to be short-lived: They split in mid-2018.
Jesse Metcalfe made his relationship with his new girlfriend, Corin Jamie-Lee Clark, Instagram official in honor of her birthday on Dec. 19, 2020. "Happy Birthday, babe!" he captioned a photo of himself and the Canadian beauty posing by his beloved '70s Chevelle. The duo were first linked four months earlier.
Cody Simpson and Marloes Stevens made their relationship Insta official on Dec. 26, 2020: The Australian singer-songwriter took to his Instagram Story to share a photo of himself and the model embracing while celebrating their first Christmas together. He captioned the shot with a Dutch phrase that translates to, "I am lucky to have met you." Later that day, his mom included the PDA-packed pic in a slideshow of photos depicting their family's holiday celebrations.
Kelly Dodd went Insta official with Rick Leventhal on Aug. 23, 2019 — just eight days after she first hinted at their relationship on the photo-sharing platform amid her breakup from her last boyfriend, plastic surgeon Dr. Brian Reagan. "My 👑 Prince came across the pond to see me!! @rickleventhal I am one lucky girl!! #london #princecharming #anchorman," the reality star captioned a selfie with the Fox News journalist. From there, Kelly and Rick took off like wildfire: They got engaged in November 2019 and tied the knot the following October.
Kristen Doute and her boyfriend, Alex Menache, went Instagram official on May 15, 2020. "Pretty fly for tie dye," the "Vanderpump Rules" star captioned a selfie with her beau wearing clashing tie-dye ensembles during a walk in the Los Angeles area. She later posted a second selfie with her man: "He wanted a photo with his hair done but this is my Instagram," she captioned a shot of them hanging out by a swimming pool.
In other "Vanderpump Rules" Instagram debut news… Scheana Shay's boyfriend, Brock Davies, made his big debut on April 22, 2020: "I've waited a while to actually post something [with] my BF [because] negativity always surrounds my dating life and it can be frustrating. BUT, it's been 7 months and I've never been happier!! I finally am ready to share our relationship," she captioned a short selfie video with the personal trainer in Hawaii.
"Southern Charm" star Kathryn Dennis went Instagram official with her new boyfriend, Chleb Ravenell, on Oct. 23, 2020. "YOU," she captioned a photo of the former college football player posing with his arms wrapped around her.
Garcelle Beauvais took to Instagram on Dec. 7, 2019, to debut her then-boyfriend, Michael Elliot, captioning a selfie with the screenwriter, "#datenight." In February 2020, she announced that their brief romance had sadly come to an end.
Bachelor Nation's Garrett Yrigoyen made headlines when he debuted his new girlfriend, yoga instructor Alex Farrar, on Instagram on Halloween 2020 … just two months after former "The Bachelorette" star Becca Kufrin announced they'd called it quits following a two-year engagement. "Happy Halloween. Picked up a special pumpkin at the patch," he captioned a slideshow of photos of himself and the blonde beauty.
James Middleton and Alizee Thevenet had been a couple for about a year when they finally went Instagram official on May 7, 2019. "Sail away with me," Duchess Kate's younger brother captioned this smiley selfie with his love, to whom he proposed just months later.
Eva Amurri debuted her new boyfriend, chef Ian Hock, on her Instagram Story in early January 2020.
On Aug. 2, 2020, Simone Biles confirmed rumors that she and Jonathan Owens were an item when she made their relationship Instagram official. "It's just us," she captioned a slideshow of photos of herself and the professional football player, including a shot of him nuzzling her neck.
On Jan. 12, 2021, "Below Deck Mediterranean" alum Hannah Ferrier finally unveiled her fiancé, Josh Roberts, on Instagram. "Okkkkkk…Here he is. Insta official. Love you baby," she captioned a sweet selfie.