Looks like the reunion between Paris Hilton and her former boyfriend Stavros Niarchos was short-lived. While the couple were partying at Diddy's white party in Saint-Tropez, Hilton reportedly accused the shipping heir of not trusting her. A source told a British paper, "Paris was clapping at Diddy's trampoline antics while Stavros was on the other side of the pool, glaring at her. He began texting Paris to come over, but she refused, sending him harsh messages on her diamante-covered Blackberry. Eventually, she stormed over and yelled, 'Don't you trust me? Get over it!'" Stavros then allegedly stormed out of the party, leaving Hilton to party on her own until 6 a.m.