S1, E4: Eun Seong and Rae Wan get into a fight over a flat coke bottle that Rae Wan has been keeping ever since they slept with each other two months ago. She mentions his messy fridge, claiming that the fridge is exactly like his heart. In order for him to get over what happened between them, she tells him that he should empty out the fridge. Rae Wan tells her that the reason why his slump came was because of her and tells her to mind her own business.