Widaehan Yuhokja - Season 1 Episode 16

Si Hyun finds Tae Hee living in a pile of mess and not having a balanced diet. He tells her that he will come by to take care of her more often and cleans the house. He also shyly asks her to change her passcode to his number, to which she tells him that it is already his number. Meanwhile, Si Hyun visits Seok Woo and promises that he will find out whom he is seeing.