EXCLUSIVE: Calvin Klein and boy toy reconcile

Calvin Klein is reconciling with his troubled much-younger boyfriend Nick Gruber, and recently whisked him away on a romantic Mexico break, sources exclusively tell Page Six.

Blond-haired , blue-eyed, former erotic model Gruber, 23, and Klein — who is 47 years his senior — split in January 2012 after two years, following Gruber’s infamous incident punching a political intern and being arrested for cocaine possession after a night of partying at his Greenwich Street apartment.

Gruber then headed to a rehab facility in Arizona, with rumors that the 70-year-old fashion mogul was footing the bill and had flown him there via private jet.

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Nick Gruber and Calvin Klein in 2010.

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Nick Gruber

After the breakup, penniless Gruber announced he was working on a tell-all titled “Obsession: My Life With Calvin Klein,” and told Page Six Magazine he was the first man Klein ever fell for. He also claimed Klein once made him take a lie-detector test after suspecting he’d cheated.

Gruber announced he was also working on a reality show about his relationship with Klein, having moved to LA and started dating John Luciano. But by February this year, Gruber and Luciano broke up, and Gruber had a change of heart and pulled the plug on his book.

A source now tells us, “Calvin feels very protective over him. Despite all that has happened, and everything he’s done, he still loves Nick.”

We’re told Klein flew Gruber to Mexico and the two met up at an exclusive resort there. The source added, “Calvin wants to keep it low-key.”

Another source said, “Nick and Calvin had been texting and met up at the Chateau Marmont [in Los Angeles] about a month ago. Nick and John broke up around February, but remained friends. John actually encouraged Nick to get back with Calvin. He thinks it would be helpful for him.”

A spokesperson for Klein said: “I can confirm they are friends and no more. There is no relationship whatsoever, but at the same time Calvin holds no grudges and has put whatever problems they had 

Reason behind Naomi and Vlad’s break

Naomi Campbell and Vladimir Doronin put their five-year relationship on a break because the Russian billionaire is “too swept up in the celebrity lifestyle” that the supermodel is part of, a source tells Page Six.

Naomi counts stars like Leo DiCaprio and Diddy as part of her social circle, but unlike Vlad, she views partying with her celeb friends as work, not as play, says the source.

Page Six revealed that the two were on the rocks earlier this week. An insider told us, “In many ways their relationship is like a business arrangement. Naomi brings glamour to his hotels and properties, and he treats her extremely well. But they spend a lot of time apart due to work commitments.”

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Happier times: Vladimir Doronin and Naomi Campbell attend "The Beaver" premiere at the 64th Cannes Film Festival on May 17, 2011

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The supermodel and the billionaire

The couple were last seen together on the beach in Miami in March. Doronin, 50, was noticeably not with Campbell, 42, as she attended numerous Oscar parties in Hollywood in February.

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.

Campbell’s career, meanwhile, has skyrocketed with her TV show “The Face” and she also appears in a sizzling shoot on the cover of this month's Vogue Brazil.

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.