Lance Armstrong has denied rumours he is romancing actress-turned-fashion designer Ashley Olsen - who is 15 years his junior. The couple were rumoured to be dating after they were spotted enjoying an intimate dinner at the Gramercy Park Hotel bar in New York last month (Oct07). However Armstrong, 36 insists he is not romantically involved with the 21-year-old. He tells New York Post's gossip column PageSix, "Ashley Olsen and I are strictly friends. We have hung out amongst other friends, and she strikes me as a nice, smart lady."