1. Kristen Bell and Dax Shepard View this photo on Instagram instagram.com Kristen and Dax may have been married with children since 2013, but things almost didn't work out that way. In fact, three months into their relationship, Dax called things off with Kristen because he wanted to continue dating other people. Kristen revealed that his confession made her "liquify and fall to the ground," but she felt "respected" that he'd told her the truth. Four days later, however, Dax realised his mistake and called her saying: "I don't know what I was thinking. I was dating someone else but they're just not as interesting as you, and I don't know what I'm doing." And the rest is history. 2. Prince William and Kate Middleton Kay Nietfeld / DPA/PA Images William and Kate got together during university and their relationship lasted four years before they split in 2007. Speaking during their first ever join interview to mark their engagement, Kate confirmed that it was William who ended things. "I wasn't very happy about it," she revealed, but went on to say that she "learned a lot" about herself from the time apart. Luckily William realised he was destined to be with Kate after all and the pair got back together later that year, married in 2011 and now have three children. 3. Rose Leslie and Kit Harington Jane Barlow / PA Archive/PA Images The start of this Game of Thrones love affair was extremely off-and-on. Kit and Rose got together in 2012, split a year later, rekindled in 2014, split again in 2015 before finally reuniting and confirming their relationship in 2016. Since then, the pair have been rock solid, getting engaged in 2017 and marrying in a romantic ceremony last year. 4. Chrissy Teigen and John Legend View this photo on Instagram instagram.com Chrissy and John are one of the most loved-up and stable couples in showbiz. However, back in 2009 when they first got together John ended things with Chrissy because he was "stressed and busy" and thought he'd be "happier single." Chrissy, however, had other ideas and simply told him "No." And, within a couple of days John came around and decided to give things another go. Thank goodness, because otherwise we'd never have been blessed with the cuteness of Luna and Miles. 5. Adam Levine and Behati Prinsloo View this photo on Instagram instagram.com Adam and Behati had been dating for less than a year when they split in May 2013. However, after just two months apart the pair realised what they were missing, reunited and got engaged. They married in 2014 and now have two daughters. 6. Justin Timberlake and Jessica Biel View this photo on Instagram instagram.com Justin and Jessica may have been married since 2012, but they did hit a stumbling block before making it down the aisle. They actually split for a brief period in 2011 after four years of dating. However, they remained close with Justin describing Jessica in the months after breaking up as "the single most significant person in my life." Luckily they got back together, married, and became parents to Silas in 2015. 7. Kelly Ripa and Mark Consuelos View this photo on Instagram instagram.com Kelly and Mark may well be Hollywood's mom and dad now, but it almost didn't work out that way. In fact, the pair recently revealed that they broke up just before they were due to get married, ended up getting back together the day before the scheduled wedding and then eloped to Las Vegas! 8. Kristin Cavallari and Jay Cutler View this photo on Instagram instagram.com Kristin and Jay had been engaged for a year when she called the whole thing off in 2011, revealing that "a few things needed to change" in the relationship and a breakup was the "only way" Jay would see how serious those issues were. Luckily, the pair decided to attend therapy together, started dating again in 2012 and married a year later. They now have three children. 9. Nick and Vanessa Lachey View this photo on Instagram instagram.com After meeting in 2006 on the set of his music video for "What's Left of Me," Nick and Vanessa were together for three years when he reportedly got "cold feet" and called it quits. However, within a few months they'd patched things up and Nick finally proposed in 2010. They married in 2011 and since then have welcomed three adorable children. 10. Gabrielle Union and Dwyane Wade View this photo on Instagram instagram.com Gabrielle and Dwayne had been together for four years when they decided to take a break in early 2013, during which time Dwayne had a baby with another woman. However, by the end of the year the pair had reunited, and got married in 2014. Last year, the pair welcomed their first child together — a daughter named Kaavia James. 11. Pink and Carey Hart View this photo on Instagram instagram.com Pink and Carey began their relationship in 2001 but have had quite a bumpy ride since then. They got engaged in 2005 after four years together, but following two years of marriage announced they'd decided to go their separate ways. They maintained things were amicable, and proved it when Carey appeared in the video for Pink's breakup anthem "So What?" A year later they got back together and have remained that way ever since. They now share two children together. 12. Miley Cyrus and Liam Hemsworth View this photo on Instagram instagram.com After meeting and getting together on the set of the movie, The Last Song in 2009, Liam and Miley got engaged in 2012 but called off the engagement and split up a year later. After a few years apart, the pair rekindled their romance in 2016 and have been solid ever since, tying the knot in a surprise ceremony just before Christmas last year.