As Jeremy's love life takes a surprising turn, Mark deals with his own matters of the heart. A girl he has had a crush on since university is launching her new book, so he seizes the opportunity to see her, telling himself it is endurance, not stalking. He invents a fictitious dinner party to get her into the flat, but things do not look good when she calls to ask if she can bring her husband. In an effort to bolster numbers, Mark gets Jeremy and his friends on board last minute, and by the end of the night the truth about Jez's new romance is revealed to all.