Conway’s eye said Puke. ‘How come all the secrecy?’ I asked. ‘Why not just tell everyone you were together?’

That made Joanne move, a defensive jerk: the secret hadn’t been her idea. She took a breath and got back in character. ‘I mean, this wasn’t just some stupid shallow teenage thing. We had something special, me and Chris. It was so intense, it was like, ohmyGod, something out of a song? People wouldn’t have understood; they literally wouldn’t have been able to get it. I mean, obviously we were going to tell them anyway, in a while. Just not yet.’

Coming out too pat and brittle, learned off by heart. The lines Chris had given her, that she’d told herself over and over to make it feel OK.

I asked, ‘It wasn’t because there was someone specific who Chris didn’t want finding out? A jealous ex, something like that?’

‘No. I mean . . .’ Joanne thought about that, liked it. ‘There could’ve been. I mean, lots of people would’ve been so jel if they’d known. But he never mentioned anyone.’

‘How’d you manage to meet up in secret, if you couldn’t get out at night?’

‘At the weekends, mostly. Sometimes in the afternoons, between classes and study period, but it was hard finding a place where we wouldn’t get spotted. This one time, you know the little park down past the Court? It was November, so it was dark early and the park was closed, but me and Chris climbed over the railings. There’s this little roundabout, for kids; we sat on that and . . .’

Joanne was half-smiling, unconsciously, remembering. ‘I was there, “OhmyGod, I can’t believe I’m doing this, climbing around in the dark like some skanger; you’d better buy me something nice after this,” but I was just joking. It was actually . . . fun. We were laughing so hard. We had fun, that day.’

A wisp of a laugh. A frail thing, lost, drifting between the slick posters and the makeup-smeared tissues. Not a laugh she’d learned off some reality star and practised; just her, missing that day.

Here was why she had needed to see Selena and Chris through a dirty snicker and a gagging noise. That was the only way she could stand to look.

I said, ‘So what happened? You were together a couple of months, you said. Why’d you split up?’

That slammed Joanne shut again. Fake stare clanging into place, vein of hurt vanished behind it. ‘I broke up with him. I feel sooo terrible about it now—’

‘Ah-ah,’ Conway said, waving the bag again. ‘That’s not what this says.’

‘You kept texting him and ringing him after he stopped answering,’ I explained. Joanne’s mouth thinned. ‘What happened?’