They're on, they're off. Whether or not Miley Cyrus and Liam Hemsworth make it as a couple, one thing's clear: Those who called out 19 years old as simply too young to be betrothed are now nodding their heads in vindication.
It seems like the "Last Song" co-stars are simply following in the long tradition of famous stars who have called off their engagement before hitting the altar. From Courteney Cox and Michael Keaton to Britney Spears and Jason Trawick, Hollywood sees more romantic mixups than an episode of "Gossip Girl." Launch our gallery below to see the most notable broken engagements in recent memory.
Winona Ryder, Johnny Depp
The telegenic "Edward Scissorhands" co-stars were quick to become engaged but ultimately ended their romance when Ryder was only 19 years old.
Courtney Love, Edward Norton
Talk about a blast from the past: The "People vs. Larry Flynt" co-stars were engaged in the '90s.
Ryan Reynolds, Alanis Morisette
Fellow Canadians Reynolds and Morisette got engaged in 2004 but called it quits in February 2007. "They remain close friends and continue to have the utmost love and admiration for each other. They ask that their privacy be respected surrounding this personal matter," the<a href="http://www.people.com/people/article/0,,20010781,00.html" target="_hplink"> former couple said in a statement</a> to People at the time.
Courteney Cox, Michael Keaton
Cox and Keaton met through a mutual friend and began dating in 1990, but ultimately called it quits five years later, in 1995.
Britney Spears, Jason Trawick
Oops, Britney did it again, this time breaking up an engagement to former manager Jason Trawick in January 2013.
Heather Locklear, Jack Wagner
Amid allegations of DUI and drinking problems, former "Melrose Place" co-stars Heather Locklear and Jack Wagner chose not to walk down the aisle.
Kanye West, Alexis Phifer
Kanye may be gunning to propose to Kim Kardashian, but did you know that the "Clique" rapper was betrothed once before, to fashion designer Alexis Phifer?
Nicollette Sheridan, Michael Bolton
Bolton and the former "Desperate Housewives" star dated on-and-off for an epic 17 years. "Certain people you're always gonna love," <a href="http://tv.yahoo.com/news/michael-bolton-talks-nicollette-sheridan-certain-people-youre-163301683.html" target="_hplink">the singer told Access Hollywood Live</a>. "It's just something that happens with you and somebody in your life."
Rachel Weisz, Darren Aronofsky
The couple had been engaged since 2005 and are parents to a son. But in 2010, they decided to end it; by the next year, Weisz was married to "Dream House" co-star Daniel Craig.
Pete Doherty, Kate Moss
Britain's hard-partying couple ended their romance in 2007 amid allegations that Doherty had cheated on Moss.
Ben Affleck and Jennifer Lopez
Ah,"Bennifer." They proved opposites really <em>do</em> attract when Affleck proposed to Lopez with a $1.2 million, 6.1 carat pink diamond. They set the wedding date for Sept. 14, 2003. Sadly though, <a href="http://www.people.com/people/article/0,,624672,00.html">they postponed the wedding</a> just days before they were set to walk down the aisle. It was never rescheduled.
Kiefer Sutherland and Julia Roberts
In 1991, Julia Roberts and Kiefer Sutherland's Hollywood wedding was set to take place at 20th Century Fox's Soundstage 14. But it never happened. Roberts shocked the world when she broke up with Sutherland just three days before the ceremony and ran off with his best friend, actor Jason Patric. Friends said Sutherland was "shocked" by the split, but more than a decade later, <a href="http://www.starpulse.com/news/index.php/2007/04/09/kiefer_sutherland_forgives_julia_roberts">he said</a>, "I commend Julia for seeing how young and silly we were, even as painful and difficult as it was."
Brad Pitt and Gwyneth Paltrow
They met in 1995 on the set of "Seven," but Pitt and Paltrow's beloved Hollywood romance ended on June 16, 1997. Pitt proposed in December 1996, Paltrow said yes, and they were <a href="http://www.people.com/people/archive/article/0,,20122540,00.html">reportedly set to marry</a> in East Hampton, N.Y. in the summer of '97. Of course, that never happened!
Carson Daly and Tara Reid
The "Voice" host and "American Pie" star dated for almost two years before they became engaged in 2000. They were set to have a summer wedding in 2001, but Reid got cold feet and they announced their split in July 2001.
Emilio Estevez and Demi Moore
Fellow young actors Demi Moore and Emilio Estevez were supposed to get married on December 13, 1986. Shortly before the ceremony the couple announced their decision to call everything off and remain “just friends.” The next year Demi married Bruce Willis.
Jarrett Stoll and Rachel Hunter
Rachel Hunter was dumped by her fiance Jarret Stoll just two months before their August 2009 wedding. Hunter was devastated as "everything was in place for their wedding." During the split, her rep asked the media to respect her privacy during “this extremely upsetting time.”
Marilyn Manson and Evan Rachel Wood
Manson and Wood got together in 2006, but later split in 2008. They then rekindled their romance a year later and Manson proposed while on stage at a Paris concert in Jan. 2010. Eight months later, the engagement was called off.
Alec Baldwin and Janine Turner
Alec Baldwin and Janine Turner were engaged in 1983, when they were both in their 20s and struggling to break out into show business. When the wedding was all set to go off, Baldwin broke the engagement off and Turner was devastated. "When I met Alec, I was 20. We got engaged. It was rushed, and it didn't work," she has said. "Alec taught me a lot about my emotions, about my childhood."
Jude Law and Sienna Miller
After dating for two years, Miller called off their engagement in July 2005 after Law confessed to having an affair with his kids' nanny. They rekindled their romance in December 2009, but split again in February 2011.
Chris Klein and Katie Holmes
Before Tom Cruise, Katie Holmes dated fellow actor Chris Klein. They got engaged on Christmas 2003, but eventually ended their relationship in March 2005 after five years together.
Jamie Belman and Petra Nemcova
Nemcova became engaged to British actor Jamie Belman in January 2011, but it ended suddenly. "Petra Nemcova and Jamie Belman confirm their separation," Nemcova's rep confirmed. "They remain close friends and thank their families for their continued support during this time."
Lance Armstrong and Sheryl Crow
Shortly after filing for divorce from his first wife in September 2003, Lance Armstrong began dating songstress Sheryl Crow. The couple announced their engagement in September 2005, but by February 2006, they revealed they would not make the trek down the aisle.
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