Hugh Hefner’s widow, 34, was photographed this week at the Casa de Mita resort in Mexico with boyfriend Nathan Levi, a 32-year-old spaceship engineer. The couple took a loved-up stroll on the beach, only stopping to kiss and cuddle.

A source told Page Six that they’ve been dating for four months after Levi, who has his pilot’s license, won her over by taking her flying.

“Hef would approve of her romance,” the insider shared. “Since his death she has been mourning and soul searching and traveling the world.

“It’s been hard for her to find someone who measures up to the legend of Hugh Hefner, and this guy seems to be it.”

The insider said Crystal’s friends have given their stamp of approval, adding, “He’s an amazing guy and all her friends adore him.”

This is Crystal’s first public romance since the death of the Playboy founder in September 2017 at age 91. She wed the magazine tycoon in 2012 and was his third wife.

“I am heartbroken. I am still in disbelief,” Crystal said in a statement after his passing. “He was an American hero. A pioneer. A kind and humble soul who opened up his life and home to the world.”