Paris Hilton is back together with her ex-boyfriend, Greek shipping heir Stavros Niarchos ¡V at least for now.

"We're together now here. We love each other," Hilton, who, like Niarchos, is in Saint-Tropez, told PEOPLE on Monday at Diddy's Unforgettable 50 party aboard a rented yacht.

While talking to PEOPLE, Hilton paused for a moment to call Niarchos on her PDA. "Stav, where are you, baby?" she said. "Come on over. I love you."

Seconded Hilton's friend, Carolina D'Amore, "They love each other very much."

On Saturday night, Hilton was seen partying with Niarchos at the VIP Room nightclub, where she treated him to a pole dance. The following night they kissed at the nearby club Les Caves du Roy.

Hilton, 25, and Stavros, 21, split in May after seven months of dating.

Niarchos was previously involved with Mary-Kate Olsen. After his split from Hilton, he was spotted partying with Lindsay Lohan.

Hilton was previously engaged to Paris Latsis, also a Greek shipping heir.
•Reporting by Dana Kennedy, Courtney Rubin and Nancy Wilson