Supermodel Naomi Campbell and her Russian tycoon lover, Vladimir Doronin, split after a series of fights which led to them sleeping in separate bedrooms, sources exclusively tell Page Six.

The pair have hit a rocky patch, as we first revealed Tuesday, over their different lifestyles and work schedules.

One source said, “They’ve been fighting for a while. It’s been going on for six months or nine months. They’ve been sleeping in separate bedrooms and split for a few weeks.

“Naomi likes to live by her own rules, stay out late, be a free spirit, while Vlad is more regimented,” the insider added. “He is up early, works hard, does yoga and is super healthy.”

The source said that the 42-year-old British beauty’s relationship with the 50-year-old billionaire property mogul had flourished as she introduced him to her celebrity friends.

“I think he loves being around the celebrities. He loves going to the parties,” our insider continued. “But he still doesn’t do the drugs or the drinking.”

As we’ve reported, other sources said their relationship had become “like a business relationship” because, one insider told us, “Naomi brings the celebrity, the glamour, the beauty to his properties, and Vlad keeps her in the style she is accustomed to.

“Vlad and his estranged wife, Katia, are on happy terms. And Katia was always on good terms with Naomi, who also has a great relationship with Vlad’s daughter.”

Meanwhile, Campbell’s career has been rocketing, with her TV show “The Face” a hit in the US and currently filming in the UK. She also looks sensational gracing the May cover of Vogue Brazil.

Despite this, multiple sources say it’s possible they’ll make up. One said, “They have broken up and gotten back together many times. I would guess they would get back together. The next few weeks will be key.”

Reps for Campbell didn’t comment.