With rehearsals well underway, Donmar Head of New Work Clare Slater sat down with Love and Other Acts of Violence playwright Cordelia Lynn and designer Basia Bińkowska to find out more about the process so far. — Clare Slater: I’m going to start by asking the classic question, which is, Cordelia: can you tell us a little bit about the play? Cordelia Lynn: Fundamentally, it is about a young couple roughly now, roughly here, who have a relationship that we see developing over about 10 years. The…