This year, 2019, was a year of heartbreak for many favorite stars in the entertainment industry. While some celebrity splits weren't a complete shock, others -- like This Is Us star Justin Hartley's backdated split from his wife Chrishell Stause in November -- were more unexpected.
Lady Gaga's broken engagement to fiance Christian Carino in early 2019 came amid buzz that she was getting cozy with her A Star Is Born co-star Bradley Cooper. The co-stars' steamy performance of their hit song "Shallow" at the 2019 Academy Awards further fueled romance rumors as fans noted the "look of love" between them during the live duet. Months later, Cooper split from his longtime girlfriend Irina Shayk, but with two relationships done, he and Gaga never became a thing.
Other splits in 2019 also made headlines, even without a steamy duet.
Tristan Thompson & Khloé KardashianIn February 2019, Khloe Kardashian ended her relationship with NBA star Tristan Thompson, the father of her daughter True, after he reportedly kissed family friend Jordyn Woods at a party. While the relationship as a whole was a train wreck -- Thompson allegedly cheated on Khloe days before baby True was born in 2018 -- the circumstances of this split were especially crushing. The Keeping Up with the Kardashians star was hurt by both her man and her sister Kylie Jenner's best friend. Since that time, there have been rumors that Khloe misses Tristan and that he has tried to woo her back.
Miley Cyrus & Liam HemsworthIn August, less than eight months after their wedding, Miley Cyrus split from her hunky actor husband. Fans were thrown through an additional loop when Miley was photographed making out with Kaitlynn Carter on the heels of The Hills star's breakup with Brody Jenner. While no reason for her split from Hemsworth was given, the "Wrecking Ball" singer took to Instagram to assure fans that it had nothing to do with infidelity.
"There are NO secrets to uncover here," Miley wrote in late August. "I can admit to a lot of things but I refuse to admit that my marriage ended because of cheating. … I love Liam and always will."