This may be the meanest way to dump your girlfriend.

A Manhattan fashion consultant says she returned from a girls weekend in California to her boyfriend’s Hamptons mansion — only to be greeted by a process server who slapped her with an order of protection.

“I was 100 percent shocked,” a heartbroken Nicole Raef told The Post. “I was like, ‘I don’t understand, who breaks up with someone this way?’ ”

Raef, 28, has been homeless ever since her boyfriend of five years abruptly threw her out of his $1.7 million Long Island summer home and his $6 million Manhattan town house.

“Everything was fine when I left,” Raef said, adding that she had to pawn her diamond earrings to afford legal counsel.

“We’d been arguing, but we’d worked things out,” the slender brunette said.

But court papers filed by her boyfriend, hedge fund executive-turned-private investor Brad Zipper, tell a different story.

Zipper, 50, former head of Zinc Capital Management, paints his decades-younger ex as an abusive, emotionally unstable stalker. In an application for a temporary restraining order, Zipper says he came home in December 2012 to find his oven on fire and Raef passed out in the guest room.

“When she woke up, she was delirious and didn’t even remember driving and getting into an accident with my car that night,” the suit says.

Then, in 2014, during a Fourth of July party, Raef “had multiple breakdowns” and threw “several glass bottles directly” at her boyfriend’s head, according to the Manhattan Family Court papers.

The last straw came when she allegedly “threw thousands of dollars” of his possessions into the pool at his South Hampton home.

The couple enjoyed a jet-set lifestyle, with ski trips to Aspen and vacations in St. Barts, Raef said. They were written up in society pages alongside Zipper’s parents: His dad, Lance Zipper, was head of Nasdaq trading at Kidder, Peabody & Co., and his mom, Barbara, was a Wall Street order clerk.

Raef’s attorney, Brett Kimmel, denied Zipper’s claims.

“The allegations that are set forth in the pleadings are clearly embellished and to a large degree untrue,” he said. “This is a wealthy man breaking up with his girlfriend and doing it in a really untasteful way.”