Harry chose that moment to walk up to the two of them, deciding that if Corner was hitting on her, this was the time to intervene.
"Hi," he smiled, and immediately took Mandy's hand - you know, to show Corner who was boss and all - and squeezed it. "Sorry to have to leave so quick, Mandy - had to have a word, you know. Corner," he nodded. "Thanks for keeping my lady company."