James Blunt dumped by Petra Nemcova?

Supermodel Petra Nemcova is reported to have dumped James Blunt over claims that he was unfaithful.
The Daily Mail suggests that Nemcova decided to end the relationship, which began in June, following allegations over the 'You're Beautiful' singer's antics in Ibiza.
The paper quotes a source as saying that "rumours got back to Petra that James had been partying with loads of gorgeous girls in Ibiza over the summer. They had a huge row during London Fashion Week last month and now it is all over."