Things are getting wet and wild between Kourtney Kardashian and Younes Bendjima, her 24-year-old boy toy!

The mother-of-three was spotted soaking in the sun aboard a yacht with younger sister Kendall Jenner — and along with showing off her incredible bikini Kourt, 38, was making a splash with her new man.

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Riding a jet ski with Kendall, the duo was soon joined by Younes and family friend Simon Huck, as they rode around the French Riviera during the Cannes Fim Festival.

kourtney kardashian younes bendjima getty

While Kourtney is enjoying a mini-vacation from her kids, Mason, 7, Penelope, 4, and Reign, 2, her ex Scott Disick celebrated his birthday without his family in Las Vegas.

Scott didn't look too happy at his bash at Vegas hot spot 1 Oak, and sources revealed to Life & Style exclusively that the Lord is jealous of Kourt's relationship with the Algerian model.

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"Scott will do anything to sabotage Kourtney’s relationship, including showing up wherever Kourtney and Younes are hanging out together,” the insider said. “He’s also been asking around, trying to get some dirt on Younes so he can bring it back to Kourt and persuade her to dump him."

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Another hard day at the office. @jetluxlife

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The source continued, "He even threw a full-on tantrum recently, yelling and screaming at Kourt that Younes isn’t right for her."

However, Kourtney has made it very clear she is ready to move on.

MORE: Kourtney Kardashian and Younes Bendjima Spend the Night Together at the Hotel Bel-Air!

"I think after everything that's happened here in Costa Rica, Scott knows it's done," she said in a recent episode of the family's reality show, "But just saying those words just lets both of us move on."

She then proceeded to remove all hope of a reconciliation from Scott after he was caught sneaking a girl into his hotel room during the family vacation, adding, "I think the moral of the story is we are never getting back together."

For more photos of the Kardashian sisters in bikinis, check out the gallery below!