James Blunt cheated on his supermodel girlfriend Petra Nemcova, according to a student nurse who says she had a one-night-stand with the singer. Jenna MacDonald met the `You’re Beautiful’ crooner after one of his gigs in June and claims that he lied about being single before spending the night with her. “He’s a rat and people need to know the truth about him,” Jenna rants. “I loved his posh accent and I surrendered instantly. As we fell into bed I thought, ‘What the hell? He’s a pop star.’ He claimed he had no time for a relationship – but in reality, he was dating Petra. He told me there had been pictures in the papers of him with a girl on the beach but there was nothing going on. Later I found out she was his girlfriend.” [13 November 2006]