This year will go down in history as the year of the breakup. Everyone from Taylor Swift and Calvin Harris, Drew Barrymore and Will Kopelman, Johnny Depp and Amber Heard ended their relationships in favor of living the single life.

On Tuesday, Lady Gaga and Taylor Kinney joined the ranks of celebrity couples who are no more. The pair had been together for five years in total and were engaged to be married. Kinney, 35, popped the question on February 14, 2015, gifting his former bride-to-be with a massive heart-shaped engagement ring. While news of their relationship’s demise was shocking, it is not altogether uncommon in Hollywood.

Here are 16 other celebrity couples who broke off their engagements before they ever got to say their “I Dos:”

Nick Young and Iggy Azalea:

On June 19, Daily Mail reported that the “Team” singer and her beau of two years had decided to call it quits. The news came several months after a video, taken by Young’s Los Angeles Lakers teammate D’Angelo Russell, hit the internet. The clip, recorded without Young’s knowledge, appeared to show him confessing to having been unfaithful. While their relationship stood up to that test, Azealia ditched her husband-to-be after learning that he’d brought women to the home they shared while she was away. Around the same time that news of their split surfaced it was reported that Young had impregnated his ex-girlfriend.

Kaley Cuoco and Josh Resnik:

Before briefly marrying Ryan Sweeting, “Big Bang Theory” actress Kaley Cuoco was slated to walk down the aisle with her video game designer beau. Cuoco, 26 at the time, revealed the end of her engagement during an interview with Entertainment Tonight in October 2011.

Britney Spears and Jason Trawick:

This pop princess has not been lucky in love. In 2009 Britney Spears began dating Jason Trawick, who popped the question during a trip to Las Vegas a little over one year later. The engagement lasted until January 2013, at which time People magazine reported that the pair just weren’t on the same page. The decision to split is said to have been mutual.

Ciara and Future:

Prior to August 2014, these two had everything going for them — they were in love, engaged and had a baby on the way. Not long after the birth of their son Future Zahir Wilburn, things came crumbling down. In an interview with HuffPost Live, the “Wicked” rapper confirmed that his dedication to music, rather than cheating, was what tore them apart. He also claimed they had grown apart over the years. Ciara is now happily married to Russell Wilson, but continues to feud with her ex over custody, among other things.

Jenelle Evans and Nathan Griffiths:

After watching this relationship unfold on MTV’s “Teen Mom 2,” it should come as no surprise that their engagement ended. In July 2015, Jenelle Evans told OK! Magazine their relationship went sour due to “drama happening.” She and Nathan Griffiths now share custody of their son, Kaiser, but continue to have issues.

Chris Soules and Whitney Bischoff:

Just months after meeting and forging a relationship on ABC’s “The Bachelor,” this duo called it quits. Mike Fleiss, who created the wildly popular dating show, broke the news on May 28, 2015. He tweeted that he was “sad” to report that it was over for Chris Soules and Whitney Bischoff.

Ryan Reynolds and Alanis Morissette:

In 2002 the “Deadpool” actor and Morissette began their relationship. Two years later they were engaged, but their happily ever after ended in February 2007, according to People. In a joint statement they claimed they planned to “remain close friends.” Reynolds then sparked up a relationship with actress Scarlett Johansson, marrying her in September 2008. The pair split after just two years, which Metro U.K. reported may have been caused by competition in their marriage. Reynolds is now married to Blake Lively, with their second child on the way.

Kat Von D and DeadMau5:

Legendary California-based tattoo artist Kat Von D ended her engagement to her DJ hubby-to-be, DeadMau5 in November 2012. According to Us Weekly there were rumors that cheating ended their engagement, which DeadMau5 addressed on Facebook.

“Kat and I split in November and I moved back home to Toronto. During this time, while we were broken up, I did have relations with another woman,” he admitted. “Following that, Kat and I reconciled and I acknowledged being intimate with another person while we were estranged.”

Kat Von D and Jesse James:

Before DeadMau5, the tattooist — who also has her own makeup line — was engaged to marry Jesse James. The pair split in September 2011. Months later she opened up about the split on social media, telling followers that James cheated on her with 19 women.

Jennifer Lopez and Ben Affleck:

In the early 2000s there was no hotter couple than Ben Affleck and Jennifer Lopez. That same year, the “Booty” singer sat down for an interview with Diane Sawyer, where she was coy about sharing details regarding her relationship. As was reported by ABC News at the time, she placed a call to him mid-interview and changed her tune, announcing to the world that they were engaged. The pre-marital bliss was short lived, coming to a screeching halt in 2004 and breaking the hearts of fans everywhere.

Kate Hudson and Matt Bellamy:

Not even a seasoned romantic comedy actress like Kate Hudson can force a relationship to work. In 2014, she and fiancé Matt Bellamy ended their four-year relationship. Hudson opened up about the split in Allure magazine, revealing that they “had a great relationship,” but saw their lives moving in different directions. The pair remains close, vacationing with their son, Bingham and spending holidays together.

“That doesn’t mean, though, that we can’t build something that would be the best thing for the kids.”

Gwyneth Paltrow and Brad Pitt:

Before her and Chris Martin’s “conscious uncoupling,” Gwyneth Paltrow was slated to marry Hollywood heartthrob Brad Pitt. The pair dated for more than 2 years and were set to walk down the aisle — at least, until their engagement ended in June 1997. In an interview with Howard Stern (via Us Weekly), Paltrow said that she and Pitt simply weren’t ready for marriage.

Karina Smirnoff and Maksim Chmerkovskiy:

These “Dancing With the Stars” pros were once ready to tie the knot. They got engaged on New Year’s Eve in 2008. Maksim Chmerkovskiy popped the question in Las Vegas and, according to People, both felt the moment was perfect. Their relationship ended months later. In September 2009, the publication reported that they “had been spending more time together” and were not getting along. Sources claimed that Smirnoff “knew in her heart of hearts from the beginning of their relationship that he wasn’t the one for her.”

Bristol Palin and Dakota Meyer:

Just days ahead of her planned wedding in May 2015, Bristol Palin confirmed that she and baby daddy Dakota Meyer had called off their engagement. She shared the news on Facebook, writing that she wanted to get the real story out before tabloids spun it. Although things didn’t work out for them the first time around, in June she and Dakota announced that they had secretly wed. They have since posted several happy photos together.

Miley Cyrus and Liam Hemsworth:

Similarly, Miley Cyrus and Liam Hemsworth gave love a second chance after calling off an engagement. The “Wrecking Ball” singer and “Independence Day” actor began dating in 2009, after meeting on the set of “The Last Song.” They dated for # years and Hemsworth popped the question in June 2012. The pair split in September 2013, though no reason was given. Cyrus and Hemsworth got back together in January 2016 and she has since been seen sporting her engagement ring.

Kanye West and Alexis Phifer:

Before there was KimYe (Kim Kardashian + Kanye West, for those who don’t keep up with Kardashian news), there was KanLexis. In 2002 the “Famous” rapper started a relationship with Alexis Phifer. The pair dated on and off for six years, according to Buzzfeed and took things to the next level in August 2006. Shortly after the death of his mother Donda West, a period in which questions about his plans to marry Phifer increased, it was revealed that the pair had broken up.

Taylor Kinney, Lady Gaga Taylor Kinney and Lady Gaga, photographed at the 88th annual Academy Awards in Hollywood, California, on Feb. 19, 2016, have reportedly ended their engagement — and they’re not the first celebrities to do so. Photo: Reuters