Helena Bonham-Carter and partner Tim Burton put on a united front at a concert performance in London on Monday (07Oct13) following claims he is cheating on her. Gossips were sent into a spin last week (03Oct13) when a grainy photograph emerged purportedly showing the filmmaker and a mystery blonde sharing a kiss during a night out in New York. A representative for Bonham-Carter, who has been with the Edward Scissorhands director for 12 years and is the mother of his two children, slammed reports of infidelity as "nonsense". On Monday (07Oct13) the couple proved it was very much still together by holding hands during the curtain call of a performance of Danny Elfman's music from Burton's animated movie The Nightmare Before Christmas. The British actress had performed a song during the concert at the Royal Albert Hall.