Paris Hilton is single again and In Touch can exclusively reveal why! Paris ended her relationship with Doug Reinhardt on Tuesday night after she caught him hanging out with his gorgeous ex, 23-year-old former Deal or No Deal model Kendhal Beal at Darkroom in West Hollywood. “Everyone was there having a great time, sitting at the bar, and I happen to be talking to Doug,” Kendhal tells In Touch exclusively. “Out of nowhere, Paris comes and starts throwing lemons and limes at me. It was kind of crazy! ” Kendhal claims that Paris was screaming at Doug in front of everyone, then the pair left together. But Doug's ex may not be the only reason for the split — insiders say Doug’s constant need for publicity was starting to wear on Paris. “He is a good guy and I couldn’t see him dating her for publicity,” adds Kendhal. “I’m sure that it was real.” Although the two have dated for a summer in the past, Kendhal says “We have a history but we are currently just friends.” Could Paris have been a little jealous? “Definitely,” says Kendhal. But the breakup hasn’t slowed Paris down. She headed out last night and met up with U.K. soccer star Cristiano Ronaldo at Myhouse in Hollywood. “They were making out in front of some of Doug’s friends,” a witness tells In Touch. Paris, Cristiano, and her sister Nicky Hilton all headed to Nicky’s house and partied until 5 a.m.