James Blunt engaged?

Singer James Blunt is rumoured to be engaged to supermodel Petra Nemcova.Speculation is rife the catwalk beauty has agreed to marry the British singer after the 27-year-old Czech was spotted wearing a huge diamond ring on her engagement finger while shooting a commercial for Hewlett Packard in New York this week.So far, the couple's representatives have refused to comment on the rumours.James and Petra have been dating since June.It was reported that the couple had split in October after Petra became tired of James' alleged flirting with other women.Before dating Petra the 'You're Beautiful' singer was in a two-year relationship with Camilla Boler, but they broke-up after British socialite Tara Palmer-Tomkinson claimed she'd had a brief fling with him in March.