The couple were photographed sharing a sweet kiss on Friday, as they swam in the crystal clear blue waters off the coast of Capri.
Their Mediterranean makeout comes as Kardashian, 39, and Bendjima, 25, spent a day out at sea on a private boat, sunbathing in revealing bathing suits.
Kardashian’s orange bikini by Lisa Marie Fernandez featured buttons and ruffles, giving it a retro feel. Bendjima, meanwhile, kept it classic in a short black bathing suit.
Both shared videos of their day together on their respective Instagram Stories.
Part of their day included a trip to one of the island’s stunning caves, where both Kardashian and Bendjima took a dip in the illuminating waters.
The Keeping Up with the Kardashians star and her model boyfriend also posed for a photo together, which Kardashian dressed up by putting a shark emoji over Bendjima’s face.
Earlier in the week, the pair explored the streets of Rome, hitting up all the must-see tourist spots, including the beautiful Castel Sant’angelo and the iconic Trevi Fountain, where she and Bendjima tossed some change into the water for good luck.
“Make a wish,” the mom of three captioned a GIF of her throwing a coin over her shoulder at the famous site.
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Kardashian and Bendjima first sparked dating rumors in May 2017 in Cannes, France, and have been traveling the globe together ever since.
Their recent enviable outings include a trip to the Caribbean island of Turks and Caicos with friends and family, including Kim Kardashian and Kanye West, a romantic getaway in the Mexican jungle and a hip staycation in a decked-out airstream in Malibu.