Yoon Jae-won starts repairing the burned down coffee shop with the extra money he's saving by living with Seon Eun-woo. He comes up with a list of rules for their living arrangement to encourage privacy. Eun-woo laughs at him for wanting privacy considering they used to bathe together in a plastic tub as kids. No matter how old he gets he'll always be a little kid to her. He responds that he'd look way different now if he were to bathe in that plastic tub.
The Wednesday 3:30 PM Project goes into full gear as Jae-won takes her out for cake and macarons, role-playing at the Traditional Korean Village, and even out ATVing. He tells her it's not that difficult to make her happy since she laughs so easily.
Her ex-boyfriend Baek Seung-gyu starts noticing the women all around him looking old and tired whenever he sees Eun-woo's vibrant social media posts. As everyone around him looks worn out, Eun-woo is always looking so beautiful and full of life in her posts.
The Seung-gyu confronts her about how she must not be getting work done since shes out playing too much. It even looks like she has a man and dating these days. She calls him out on the need to date people inside the same company and it shows how highly she values their company by having to run into him every day.
Eun-woo remembers the day she became a real office couple with Seung-gyu. They were so happy and thought it was destiny. Moments like this it's nice to come home to someone. She comes home buzzed but immediately sobers up when she sees Jae-won wearing her hairband.
Eun-woo forgets an important file at home and asks Jae-won to bring it to her company for 50,000 won (about $40). As she's in the elevator at work, Seung-gyu and his new office romance are holding hands behind her back, but she sees it in the mirrored door. Jae-won shows up and starts playing the loving boyfriend role in front of them. He whispers to her that he would've asked for more money if he knew he'd have to act on top of bringing the file. They have their arms around each other while they're being cutesy. Seung-gyu's new girlfriend, Kim Hye-won asks him who's the man with Manager Seon as he looks at them in disbelief.