Who Is Daniel Radcliffe’s Girlfriend? All About Actress Erin Darke Daniel Radcliffe and girlfriend Erin Darke’s romance may have started on-screen, but their real-life relationship has been going strong for almost a decade. The couple initially connected while playing love interests in Kill Your Darlings where they say they quickly realized that their chemistry continued off-screen as well. Although Radcliffe and Darke have been private about their relationship since then, their admiration for one another comes through in the support…