Aspiring pop star Paris Hilton has reunited with her ex-boyfriend, Greek shipping heir STAVROS NIARCHOS III. The hotel heiress, 25, has been romantically linked to Canadian ice hockey player JOSE THEODORE, American football player MATT LEINART and model LUCAS BAIN since she ended her seven-month relationship with 21-year-old Niarchos in May (06). However, Hilton stunned onlookers at Sean Combs' Unforgettable 50 party last night (31JUL06) as she kissed and cuddled Niarchos onboard the rap mogul's yacht in Saint Tropez, France. Hilton gushes, "We're together now here. We love each other." The socialite's pal CAROLINA D'AMORE adds, "They love each other very much."