You do not need dialogue to understand the dynamic here. In Pretending Not to Love You, the way he supports her weight when she vomits shows a familiarity that goes beyond friendship. He knows her body and her pain better than anyone else in that room, even if they are acting like strangers later.
The production design in Pretending Not to Love You is stunning, but it feels cold. That massive chandelier and the fancy food just highlight how isolated she feels. Surrounded by people yet completely alone. The visual storytelling here is top tier for a short drama format.
What a wild emotional ride! We go from a heartbreaking suicide attempt to a glamorous dinner party in seconds. The contrast in Pretending Not to Love You is insane. She puts on that brave face for her friends, but you know the pain is still there. That forced smile at the table says everything.
Notice how he holds the camera? In Pretending Not to Love You, he uses photography to keep a safe distance while still being close to her. When he takes that group photo, his eyes never really leave her. It is a subtle way to show he is still protecting her even when she pushes him away.
The way she switches modes from crying in the bathroom to laughing at dinner is terrifyingly realistic. Pretending Not to Love You captures that specific kind of high-functioning depression so well. She is performing happiness for the group, but the emptiness in her eyes gives it all away.