I’m so glad when I correctly predict the outcomes of some of these celebrity relationships. Naomi Campbell’s relationship with married Russian billionaire Vladimir Doronin was always going to end, and it was always going to end badly for Naomi. First of all, they were together for five years and he never managed to get a divorce from his wife. Second of all, Naomi waved around a giant ring and kept telling everybody (including Oprah!) that they were engaged. Third, Naomi moved to Russia to be with him. Yeah. It was always going to end badly. And now it has. According to Page Six, they are “taking a break” and Vlad is already out partying in New York, probably with a long line of models at his beck and call.

Supermodel Naomi Campbell’s five-year relationship with her Russian billionaire boyfriend, Vladimir Doronin, is on the rocks, sources exclusively tell Page Six.

We’re told the pair, who have been dating since 2008, “have been taking a break” as the British beauty’s career continues to soar with her TV show “The Face” a hit in the US and taping in the UK, while she also appears in a sizzling shoot on the cover of Vogue Brazil.

Doronin was noticeably not with Campbell as she attended numerous Oscar parties in Hollywood in February. The couple were last seen together on the beach in Miami in March.

A source told us, “Naomi and Vlad have broken up, and he’s been out partying in New York.” A spy added that Doronin was recently spotted at the Rose Bar at the Gramercy Park Hotel, flirting with a blonde.

Another source said, “Naomi and Vlad have a complex relationship, and sometimes break up and make up.” The source added, “In many ways their relationship is like a business arrangement. Naomi brings glamor to his hotels and properties, and he treats her extremely well. But they spend a lot of time apart due to work commitments.”

Campbell, 42, threw Doronin an extravagant 50th birthday bash last November in Jodhpur, India, with guests including Kate Moss, Eva Herzigova and Karolina Kurkova. Doronin, who has been building a futuristic mansion for Campbell in Moscow, is expected to be among the guests at her 43rd birthday bash May 22, which is reportedly taking place in Ibiza.

Despite his long relationship with Campbell, Doronin has not divorced his wife, Ekaterina, even though they are believed to have separated in about 1998. Prior to their split, Ekaterina was married to the property mogul for 24 years, and they have a teenage daughter, Katia. Campbell’s rep did not comment. Doronin could not be reached.

[From Page Six]

Although I didn’t say it at the time, it struck me as odd that Naomi signed on to be a judge (or whatever) on The Face last year. It meant a significant time commitment in America and away from the international parties she loves so much. And it’s not even like Naomi really needs the money – she’s wealthy in her own right, with or without a reality show. But maybe she was feathering her nest because she finally realized that she and Vlad probably weren’t going to last. Or maybe something else happened… like she beat him with a phone. God knows.

PS… And before the anti-marriage brigade comes in here and starts yelling “but maybe she didn’t even want to marry him, you are SO DUMB I HATE YOU” – she went on Oprah and talked about how she wanted to marry him. Her goal was to marry him and in five years’ time, he didn’t get a divorce. This just goes to show that even Naomi Campbell makes dumb relationship mistakes.

Photos courtesy of WENN.