Daniel Radcliffe Rosie Coker Break Up: 'Harry Potter' Star Cheated on Girlfriend with Erin Darke?

Reports confirm that "Harry Potter" star Daniel Radcliffe has broken up with his 23-year-old girlfriend, Rosie Coker. The split comes after rumors started to circulate that Radcliffe recently cheated on Coker with his "Kill Your Darlings" co-star, Erin Darke. Coker's father Malcolm told the Daily Mail, "Rosie's not in this country at the moment. She's trying to move on. She won't want to talk about it."

Radcliffe (23) and Coker began dating in 2011 after meeting on the set of "Harry Potter and the Half-Blood Prince" in 2007. At the time, Radcliffe considered Coker a "wonderful, wonderful girl, who's far too good for me." Before the split, Coker (a painter/decorator from Woking, Surrey) had been shacking up with Radcliffe in his $4.3 million Manhattan apartment.

Apparently during his relationship with Coker, Radcliffe also attempted to romantically woo 28-year-old rising actress Darke. However, the relationship doesn't seem to have worked out either, and according to a Life & Style source Darke was "devastated" when Radcliffe eventually broke off the affair: "Erin thought it was a real relationship, going as far as introducing Daniel as her boyfriend. He's flown her out to London and taken her on dates and spent plenty of time with her in NYC, but Daniel just up and left New York without a second thought. Erin was devastated!"

For pics of Radcliffe courting both Coker and Darke, click here.

Although Radcliffe's rep says he will not comment on the actor's personal life, it looks like the "Horns" star is currently back on the dating market (he is currently filming the new movie, where his character must deal with the fact that he is the prime suspect in the brutal killing of his own girlfriend).