Renee Zellweger has laughed off persistent rumours she is secretly dating Irish singer/songwriter Damien Rice. The Bridget Jones's Diary actress insists she has been single since the demise of her short-lived marriage to Kenny Chesney last year (05), and that Rice is just a friend. She says, "I like Damien so much. He's one of my favourite singers, such a neat guy. "But he is not my boyfriend."