Ruth was nodding. Keep your fucking mouth shut, Charlie ordered herself. She felt an urgent need to take back some of the poison she’d released. ‘It’s horrible having to admit your parents were probably right,’ she said. ‘Without Mum and Dad’s interventions, I’d have been mainlining cheap cider and hosting orgies every night of the week, especially school nights.’

‘There were no rows in my house,’ said Ruth. ‘There was only ever one opinion. I never heard my mother and father disagree about anything.’

‘Well . . .’ Charlie cast about for something to say, feeling uncomfortable, wondering how they’d ended up here. She and Ruth weren’t friends, swapping confidences. What would Ruth expect in exchange for her unhappy childhood stories? No, that was the wrong way to look at it. What might Ruth offer in return, if Charlie showed herself willing to act as a sounding board? There were still a lot of questions she wanted to ask; it would help if Ruth was favourably disposed. ‘Whenever I catch a bit of those Supernanny-style programmes, that’s what they seem to advise,’ she said. ‘Parents need to back each other up, not undermine one another.’

‘That’s so wrong,’ Ruth said vehemently. ‘If a child never sees its parents disagree, how’s it supposed to learn that it’s okay to have your own mind? I grew up thinking that if I ever said, “I disagree with you”, the sky would fall down. My parents only ever read the Bible or biographies—ideally of Christian martyrs—so I had to pretend I did too. I hid my real books where they’d never find them. I used to be sick with envy when I heard my friends scream at their parents that they hated them, when I heard their mums and dads scream back, “As long as you’re under my roof, you’ll live by my rules.” At least my friends could be honest about what they wanted to do.’

Christians, thought Charlie: pure evil. The Romans had the right idea throwing them to the lions. What a pity she’d omitted that line from her engagement party speech. She’d barely skimmed the surface of controversial; Simon had massively overreacted.

‘I lied to you on Friday because I needed to,’ said Ruth. She picked up her tea and took a sip. ‘I don’t disapprove of lying. I don’t think there’s anything wrong with it if there’s an unreasonable constraint in your life stopping you being the person you want to be.’

‘How’s your relationship with your parents now?’ Charlie asked.