The year featured some jaw-dropping splits, including Katie Holmes and Tom Cruise, Heidi Klum and Seal, and many more.
Will Arnett and Amy Poehler
Funny couple Will Arnett and Amy Poehler had fans crying when they announced their split in September after nine years of marriage. The "Parks and Rec" star and "Up All Night" actor wed in August 2003 and are parents to two sons, Archie, 3, and Abel, 2. "It's very amicable," their rep said of their split.
Danica Patrick and Paul Hospenthal
NASCAR drive Danica Patrick, 30, announced her seven-year marriage to husband Paul Hospenthal was over in November, via an update on Facebook. "This isn't easy for either of us, but mutually it has come to this," she wrote.
Of Hospenthal, who is 17 years older than her, she said, "He has been an important person and friend in my life and that's how we will remain moving forward."
Charley Hill and Linda Hogan
Linda Hogan, 52, called off her engagement to 23-year-old boyfriend Charley Hill in May after dating for four years. The ex-wife of Hulk Hogan announced the news on Facebook, telling fans, "My status has changed. I am now single."
She suggested their sessions on VH1's "Couples Therapy" had inspired them to split, writing, "Charley and I decided that we should each travel through life in different directions."
Mayim Bialik and Michael Stone
The former "Blossom" star announced she was splitting from husband Michael Stone in November, after nine years of marriage. "The Big Bang Theory" actress and stay-at-home dad were college sweethearts, and are parents to sons Miles, 7, and Fred, 4. Bialik said her controversial style of attachment parenting did not play a role in the end of her marriage. "Relationships are complicated no matter what style of parenting you choose," she wrote.
Heidi Klum and Seal
The once picture-perfect marriage of Heidi Klum and Seal fell apart this year, leaving the supermodel and singer barely on speaking terms. The parents of four young children announced their split in January after seven years of marriage, and Seal suggested Klum had been cheating on him with their bodyguard, whom she is now dating. Klum has said, "Our separation was based on issues between the two of us."
Debra Messing and Daniel Zelman
Debra Messing filed for divorce from husband Daniel Zelman in June after nine years of marriage, though they said they technically separated in February of 2010. The couple, who met in college, have an 8-year-old son, Roman. Now dating her "Smash" co-star Will Chase, Messing said the divorce has been hard to recover from. "Twenty years. It's a long time," she told Ladies' Home Journal. "We are dear friends. And I am at peace with the journey we've had."
Adam Levine and Anne Vyalitsyna
"The Voice" coach Adam Levine and his Sports Illustrated swimsuit model girlfriend Anne Vyalitsyna broke up in April after two years together, which apparently left the Maroon 5 singer "blindsided." Levine has since moved on with Victoria's Secret Angel Behati Prinsloo.
Russell Crowe and Danielle Spencer
Russell Crowe confirmed the split from his musician wife in October, with whom he has two sons, 8-year-old Charles and 6-year-old Tennyson. But the pair could be moving toward reconciliation: Crowe recently took to Twitter to tell fans, "My priority is to try to bring my family back together."
Dennis Quaid and Kimberly Buffington-Quaid
The third time wasn't the charm for Dennis Quaid, as his third wife, Kimberly Buffington-Quaid, filed for separation in October after eight years of marriage. The couple, parents to 4-year-old twins Thomas and Zoe, had been struggling for months, with Buffington-Quaid initially filing for divorce in March only to call it off two months later.
Jennie Garth and Peter Facinelli
"Beverly Hills, 90210" alum Jennie Garth announced in March that she and husband Peter Facinelli were divorcing after 11 years of marriage and 17 years together. Though Facinelli is now dating his "Nurse Jackie" co-star Jamie Alexander, he said of Garth, "She'll always be in my life. I love her, we're just going to have a different relationship."
Vanessa Paradis and Johnny Depp
The fiercely private couple, who spent most of their 14-year relationship in France, announced their split in June. Parents to Lily-Rose, 12, and Jack, 9, the couple have largely stayed mum on the split. "Nothing is ever for sure, but when something in love doesn't work from the beginning, it's never going to work," the French singer-actress told Harper's Bazaar. "Don't push it."
Stevie Wonder and Kai Millard-Morris
Stevie Wonder filed for divorce from wife Kai Millard Morris in August, citing "irreconciliable differences" after 11 years of marriage and two sons together. Their divorce filing revealed that the couple had been separated since October 2009.
Joe and Tina Simpson
Joe and Tina Simpson filed for divorce in September, after 35 years of marriage. "It is an amicable split and there is no third party involved," they said in a statement.
Known as "Papa Joe," Simpson has long served as the manager for daughters Jessica and Ashlee, who have both gone through their own divorces.
Danny DeVito and Rhea Perlman
Longtime Hollywood lovebirds Danny DeVito and Rhea Perlman split in October. They married in 1982 and have three children together, Lucy, 29, Grace, 27, and Jacob, 25. Since announcing their separation, the two have been spotted traveling together, and DeVito has said they are "working on it" and "still together - just separate, but together."
Richie Sambora and Denise Richards
Denise Richards and Richie Sambora broke up for the second time this year, after reconnecting in late 2011. They first dated from 2006 to 2007, when Richards was accused of stealing Sambora from former best friend Heather Locklear, which she adamantly denied.
Richards said she likes to stay close with her exes, and that she and Sambora will still "be friends."
Martin and Shamicka Lawrence
The couple of 17 years revealed in April they were divorcing after two years of marriage, announcing they had made a "joint decision to part ways." The "Big Momma's House" star and his wife have two daughters together and vowed "to remain friends."
Kristin Stewart and Robert Pattinson
In one of the most talked-about splits of the summer, "Twilight" couple Kristen Stewart and Robert Pattinson briefly broke up after photos emerged of the actress having a "momentary indiscretion" with her married "Snow White and the Huntsman" director, Rupert Sanders. The couple have since reconnected and have refused to comment on their relationship.
Kenny G and Lyndie Benson-Gorelick
Kenny G filed for divorce from wife Lyndie Benson-Gorelick in August, citing "irreconciliable differences" after first separating in January. The couple, who married in 1992, have two sons.
The smooth jazz saxophone player (last name Gorelick) is worth $50 million, but their divorce papers suggest they had a pre-nuptial agreement.
Katie Holmes and Tom Cruise
After five years of marriage, Katie Holmes dropped a bombshell on husband Tom Cruise when she announced she was filing for divorce in June. The couple came to a divorce agreement less than two weeks later and did not reveal any details, saying only, "We are committed to working together as parents to accomplish what is in our daughter Suri's best interests."
Adrienne Maloof and Paul Nassif
Adrienne Maloof and Paul Nassif were the latest to fall victim to the curse of reality TV, as the "Real Housewives of Beverly Hills" star and her plastic surgeon husband announced they were separating in July after nine years of marriage and three sons together. "My children are my life, and sometimes we need to do what's best for them," Maloof said.
Taylor Swift and Conor Kennedy
Taylor Swift is almost as famous for her turbulent love life as her music, and this year she fell hard for 18-year-old Conor Kennedy. The two were inseparable over the summer, but by October the pair had parted ways. Swift seems to have moved on to teen idol Harry Styles from One Direction.