Entertainment Music Michael Clifford and Crystal Leigh's Relationship Timeline 5 Seconds of Summer's Michael Clifford and Crystal Leigh have been together since 2016 and tied the knot in 2021. Here is a complete timeline of their relationship By Kelsie Gibson Kelsie Gibson Twitter Kelsie Gibson is the SEO Editor of PEOPLE Digital. Since joining the brand in 2021, she has contributed to a number of different verticals, writing and editing SEO content ranging from relationship timelines to TV and movie explainers. Prior to joining PEOPLE, Kelsie worked at POPSUGAR as the Celebrity and Entertainment editor, where she wrote and edited content and conducted various interviews for online and video at press junkets, red carpets, and events such as Tribeca Film Festival. She was also formerly at Bustle, Tiger Beat, and Her Campus and graduated from the University of North Carolina at Chapel Hill. People Editorial Guidelines Updated on September 18, 2022 11:00 AM Share Tweet Pin Email Trending Videos 01 of 12 June 23, 2017: Michael Clifford wishes Crystal Leigh a happy birthday The 5 Seconds of Summer member and the former talent manager first started dating in January 2016. To celebrate Leigh's birthday in 2017, Clifford shared some playful photos they snapped in a photo booth. "Happy birthday to my everything. love you more than I could ever explain ❤️," he captioned the post. 02 of 12 January 1, 2018: Michael Clifford and Crystal Leigh ring in the New Year In a sweet polaroid photo, Leigh gave Clifford a kiss as they rang in 2018. 03 of 12 September 26, 2018: Michael Clifford and Crystal Leigh share a kiss in Paris During a trip to the City of Love, the two shared a romantic moment in front of the Eiffel Tower. "Low quality pics of high quality moments ❤️," Leigh captioned the series of photos. 04 of 12 October 2018: Michael Clifford and Crystal Leigh debut matching pink hair The two took couples coordination to a new level when they both sported light pink hair in October 2018. Previously that year, in June, Clifford told Billboard he used the band's time off from the road in 2017 to learn how to be in a relationship. "Up until then, I had never been in a proper relationship, one that was super authentic and honest." "When you're on the road, you can get so caught up in this little bubble, so I wanted to learn to reflect and be honest in a relationship," Clifford added. 05 of 12 January 2019: Michael Clifford and Crystal Leigh get engaged Michael Clifford and Crystal Leigh. Courtesy GUESS?, Inc./Ryan Fleming/Gregorio Campos While celebrating their three-year anniversary at the Ungasan Clifftop Resort in Bali — where they first started dating and shared their first kiss — Clifford popped the question during a romantic proposal. "I was lucky enough to ask the love of my life to marry me in the place it all began for us," Clifford wrote on Instagram in January 2019. "In the last 3 years she has helped evolve and shape who I am in ways I could never have imagined. I couldn't ask for anyone better to spend the rest of my life with. I love loving you, Crystal. ❤️" 06 of 12 October 2019: Michael Clifford and Crystal Leigh dress up for Halloween For Halloween 2019, the couple dressed up as characters from the Japanese series My Hero Academia. "Todoroki x Froppy 4eva," Clifford wrote alongside the photo of them in their costumes on Instagram. 07 of 12 December 2019: Michael Clifford and Crystal Leigh share a cozy kiss In December 2019, Clifford posted photos of the two on a wintry escape. In one photo, the couple share a kiss in a scenic, snowy photo. "She makes me feel warm (even when I'm not) ❤️🔥," Clifford captioned the adorable snap. Leigh shared another image on Instagram of her and Clifford cuddling up together in the snow while holding their dogs. "HAPPY HOLIDAYS!" Leigh captioned the photo. "We failed at sending a holiday card bc I couldn't decide between these two photos ☃️😂 which would you pick?" 08 of 12 January 12, 2020: Michael Clifford and Crystal Leigh celebrate their four-year anniversary In honor of their four-year anniversary, Clifford posted a lengthy tribute to Leigh on Instagram. "Thank you for blessing me and allowing me to become the man I am today," he wrote alongside the throwback photo of them in Bali. He continued, "It feels surreal to have a love so honest and unconditional as I never thought I deserved anyone as pure as you in my life; but here you are proving me wrong, just like you've proven everyone else wrong your entire life." 09 of 12 February 2020: Michael Clifford and Crystal Leigh share a "forever" kiss In February 2020, Clifford captioned a cute snap of the couple kissing on Instagram. He captioned the photo,"forever/ever." 10 of 12 November 20, 2020: Crystal Leigh celebrates Michael Clifford's birthday with a trip down memory lane For Clifford's birthday in November 2020, Leigh took a trip down memory lane by sharing some of her favorite photos of him on Instagram. "Happy belated birthday to my favorite human in this entire universe, always and forever❤️❤️," she wrote. 11 of 12 January 11, 2021: Michael Clifford and Crystal Leigh secretly get married Michael Clifford and Crystal Leigh. Nardia and Dan Niles/ Foolishly Rushing In In January 2022, the couple announced exclusively to PEOPLE that they secretly tied the knot the year before on Jan. 11, 2021. "We were most excited to be near our friends all together for the first time in a while due to COVID," the couple told PEOPLE. "To be officially married, even in secret, was so special for us too — officially Mr. and Mrs." 12 of 12 June 2021: Michael Clifford and Crystal Leigh sport matching tie-dye shirts In June 2021, Clifford celebrated Leigh's birthday by sharing a photo of them hugging in matching tie-dye shirts. "I'm too lucky. happy birthday angel 🤍," he wrote alongside the snap.