Uma Thurman, 51, hasn't had much luck in love. At 18, she got married to Gary Oldman, 63. They divorced two years into the marriage which Thurman called a "mistake". Ten years later, she married Ethan Hawke, 50, with whom she shares two children — Stangers Things star Maya Hawke, 29, and Blackout actor Levon Roan Thurman-Hawke, 19.

Thurman and Hawke split in 2003 after five years of marriage. In 2005, the Pulp Fiction actress shared her post-divorce struggles in The Oprah Winfrey Show, saying it was "extremely hard," especially "on the whole family." Two years later, she started dating London-based French financier, Arpad Busson, 58.

They got engaged in 2008. Six years later, they ended the "toxic" relationship and went on a three-year custody battle for their daughter, Rosalind Arusha Arkadina Altalune Florence Thurman-Busson (AKA Luna), 9. Thurman eventually got primary custody of Luna. But it wasn't easy getting there. Here's what really went on in that bitter custody trial.

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Their On-And-Off Relationship

For context, let's go back to where it all started. It's unclear how they actually met, but the couple started dating in 2007. Then a year after their engagement, Thurman reportedly called it off. She even returned his eight-carat diamond ring. But it didn't last long before the actress was spotted with the hedge fund tycoon again.

The two continued to make their transatlantic relationship work. "We can't live anywhere else because my children's father lives here," said the Kill Bill star on why she had to stay in New York.

Meanwhile, Busson also has two sons from his previous relationship with Australian supermodel Elle Macpherson, 57 — Arpad Flynn Alexander Busson, 23, and Aurelius Cy Andrea Busson, 18. At that time, Macpherson had just gotten married to Miami-based real estate mogul Jeffrey Soffer, who has three children of his own. They also called it quits in 2017, the same year Thurman and Busson's custody trial finally ended.

In 2012, the Batman & Robin star called off her engagement with the EIM Group founder, for the second time. Thurman had just given birth to their daughter, Luna in July that year. Initial reports speculated that the two would get back together like their temporary split in 2009.

During an interview from that time, the actress just said she's "happier now than I've been in many, many years" and that she's "trying to live as peaceful a personal life as possible." They eventually got back together. But in April 2014, the actress ended the engagement for good. Six months later, Busson filed an emergency order for the custody of then-2-year-old Luna.

He didn't release a formal statement about it but Thurman's rep told ET: "It is unfortunate that this very private discussion regarding Mr. Busson’s visitation rights and his participation in decision making has been made public. However, we are optimistic that a fair agreement for both sides will be reached out of court."

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How Uma Thurman Won The Custody Battle

There was a lot of drama during the trial. Busson would sometimes skip a hearing. Then Thurman testified details about her "difficult" relationship with her ex-fiance. "He was very difficult to be with," she said. "He was very angry. He got meaner and meaner." She even cited a huge fight they had after reuniting in 2009. The actress had to cancel their trip to the Bahamas due to a serious bicycle accident involving her eldest daughter, Maya.

"He had a very aggressive tantrum in front of all the kids, he started yelling and shouting throughout the house," she recalled. "It was very upsetting and traumatic for myself and the children." She also revealed that they had more breaks from then until the time she got pregnant with Luna in 2011. "He looked at me and said, 'Well the child won't share your last name, cannot be a US citizen and can't have a US passport and will be raised Catholic'."

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After their final split, Thurman said she "didn't hear from Busson for quite some time" but that his secretary "reached out and said that he wanted to have a visit with [our daughter]." That's when the custody dispute began. The Gattaca star shared that when Luna "doesn't see her father for a long time I think it just creates anxiety. It seems like she's upset or something is bothering her around the whole issue."

In January 2017, it became evident to the judge that Thurman was the best fit for primary custody of Luna. "At this point, Luna has all the advantages in life," said Justice Matthew Cooper. "She has two parents who love her, two parents who amply provide for her."

He continued: "The only thing that’s lacking — and I hope it’s forthcoming — is that her parents can reach some sort of place in life where they can put aside their rancor and their anger against one another and can join together — never loving each other or even liking each other — at least being able to cooperate." Outside the Manhattan Supreme Court that day, Thurman said that "it’s a wonderful thing to have closure." Busson's lawyer said that they were "delighted that this came to an amicable resolution."

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