I also thought that the conversation with Esther and Nicola contains a similar foreshadowing of the collapse of that relationship. Nicola finds Esther's devotion to Daks scary and that she doesn't really know what holiday-Esther is like also parallels the Patrick/Ginty conversation, where Ginty revealing that she does love Patrick as herself scares Patrick with its intensity and their lack of knowledge of each other when they're not in proximity to one another. And beauty is part of Esther's appeal for Nicola as looks play a part in Patrick/Ginty's attraction to one another.