On Thursday, Demi Moore, 49, announced her intention to file for divorce from her 33-year-old husband, Ashton Kutcher, after six years of marriage.
But does age really play a role in the success of relationships? According to many experts, yes. Research has shown that marriages in which the wife is at least five years older than her husband are three times more likely to end in divorce.
The reason? Social stigmas surrounding women and aging impact many women's comfort in their marriages, which can damage the foundation of their relationships: "Couples with younger husbands violate social norms and thus suffer from social sanctions," says Sven Drefahl a researcher at the Max Planck Institute for Demographic Research. "Since marrying a younger husband deviates from what is regarded as normal, these couples could be regarded as outsiders and receive less social support. This could result in a less joyful and more stressful life, reduced health, and finally, increased mortality."
While age might have been a factor in the demise of Kutcher and Moore's relationship, for others, it seems to be a nonissue. Click through the slideshow below to see five May-December romances that are still going strong.
Hugh Jackman, 43, married Deborra-Lee Furness, 56, in 1996. The Australian actress says their Big Day was "the best wedding I ever went to." After 16 years, the couple is still happily married with two children.
This celeb couple tied the knot in 2008 on Mariah Carey's private island in the Bahamas. They renew their vows every year: "I have to do it every single year," Cannon says. "If you were married to Mariah Carey, you'd want to marry her every year too! I just have to keep doing it to make sure it's real." The pair, who are 11 years apart, have two children together.
After splitting from her wrestler husband, Hulk Hogan, in 2009 after 25 years of marriage, Linda Hogan began dating one of her son Nick's friends, Charlie Hill. In 2010, Linda Hogan and Hill announced their engagement (at the time, Hogan was 50-years-old, while Hill was a barely-legal 21). The couple have yet to tie the knot.
Ellen DeGeneres, 53, married Portia de Rossi, 38, in August 2008 during a brief window when same-sex marriage was legal in California. The couple have two dogs and three cats at home, along with other animals on their farm, and no plans to have children.
Actor Aaron Johnson, who starred in the film "Kick-Ass," is engaged to director Sam Taylor-Wood. The couple, who have a 23 year age gap, is expecting their second child. Taylor-Wood has two other children from her first marriage to art dealer Jay Jopling.