Da-som coincidently finds Do-Hoon's old ID on the floor. She later returns it to him asking some questions. Do-Hoon then decides to tell her about his painful past, and so she feels guilty about asking questions and hugs him. MC uses this situation to invoke jealousy into Mrs. Lee Sohee. The latter leaves them all alone for a work meeting & the work mates don't waste any time and they get straight to fucking.
Ga-yung's laptop broke down, she wants Kyung-Ho to fix it, but it's not only the laptop that she wants fixed as they fuck in the practice room at night. but they aren't at it for so long as they get interrupted by Seung-ah.