Picture the scene – I’m sitting on a stage in front of 500 cinephiles, next to one of Hollywood’s major stars. And she outs me. We’re chatting about Chloe, a stylish thriller which sees Moore as Catherine, a successful, upper-crust doctor who suspects her husband (Liam Neeson) of cheating, so hires an escort (Amanda Seyfried – Mamma Mia, Jennifer’s Body) to seduce her husband. As the tag line (‘Desire Can Be Dangerous’) suggests, this leads to an unexpected liaison between Moore and Seyfried, which is not quite what the doctor ordered.

I tell her I find the sex scenes disconcerting. This turns out to be somewhat foolish. Before I’ve had time to catch her eye she shoots back: ‘What? You don’t like girls with girls… ?!’ I can feel 500 pairs of eyes boring holes into me and my sensible shoes, followed by snorts of derision. She giggles playfully: ‘I’m sorry, I couldn’t resist that!’ When I recover, I remind her that some of her scenes are unbearably uncomfortable, almost as excruciating to watch as her key moments in Tom Kalin’s Savage Grace – yes, I mean when Moore’s heiress sleeps with her own son. Still giggling, Moore accepts the charge and likens Chloe’s sexual storyline to Michael Haneke’s The Piano Teacher. ‘What I said to Atom is that we have to be with Catherine all the way – “Oh, she’s not going to do it, is she? She’s not going to do it? Oh my god, she’s doing it, she’s doing it!”’