‘Arthur,’ Gwen said eventually, in a whisper. ‘That was a boy. You were kissing a boy.’ ‘Was it?’ said Arthur, sounding a little panicked now. ‘No, I don’t think so. I’d have noticed.’ ‘I should think it would have been obvious. You practically had your hand down the front of his—’ ‘All right,’ Arthur hissed. ‘All right. It was a boy. Congratulations, you’re a genius.