The Twilight couple only made it about four months into the year before calling off their relationship, which was and still is the subject of constant media attention. While Stewart and Pattinson aren't rekindling their romance any time soon, they did have a "very platonic" reunion in November to chat about their dogs.
What romances list would be complete without Kimye?! From welcoming their baby daughter North West over the summer to recently getting engaged, 2013 was definitely a big year for Kim and Kanye!
Everyone was surprised to learn back in July that Cowell was expecting his first child with Lauren Silverman, the ex-wife of his former friend. Since then, the couple and parents-to-be have gone public with their romance.
The Olympian announced that he was in a relationship with a man in the beginning of December. E! News broke the news that Daley's man in question was Oscar-winning writer Dustin Lance Black soon after. "I'd never felt like anything like it before," Daley said of their relationship. "He makes me feel safe and happy."
Music's biggest couple (who have 34 Grammys between them!) nabbed themselves Vanity Fair's No. 1 spot on their list of 2013 power players for obvious reasons.
Just a few days before Hemsworth and Miley Cyrus officially announced they were calling off their engagement, the Hunger Games hunk was caught partying in Las Vegas with the Mexican singer. Though their fling was brief, Hemsworth and González did pack on the PDA while spending some steamy time together in L.A.
2011 may have been the year of the royal wedding, but 2013 was the year of the royal baby! Will and Kate welcomed their first child, baby boy Prince George, this summer as the world watched on with joy and excitement.
Since getting engaged last year, fans have been on high alert waiting for Jen and Justin's wedding date. While the couple didn't get married this year, their relationship is going strong (note: steamy PDA-filled vacation in Mexico!) as both stay busy with work.
Clarkson finally got her happily ever after this year when she married love Brandon Blackstock in October. And now the American Idol winner is pregnant with the couple's first child! Congrats, Kelly!
Since first getting together in 2012 and getting back together after a short break, the musical lovebirds are stronger than ever! They even recently collaborated on their first song and music video together for the ballad "Who You Love."
Last but not least, Brangelina keeps fans fascinated year after year. The actors' year consisted of Jolie's tragic double mastectomy announcement followed by her triumphant return to the red carpet. Pitt also celebrated his blockbuster World War Z and helped honor Jolie at November's Governors Awards.
MORE PHOTOS: Biggest splits of 2013