Young-jae does not show up after inviting Ji-eun to dinner. He is tending to Hye-won's broken heart. When Hye-won is taken to the hospital, Young-jae takes care of Hye-won.
Young-jae gives Ji-eun a hard time by asking her to do the chores first before letting her leave. But she has to meet Min-hyuk to submit her first synopsis. On the subway, she dozes off and accidentally leaves her recorder on the train. When Min-hyuk sees Ji-eun upset, he asks her what the matter is. She tells him about the recorder and they go to a mall to look for the exact same model. When they finally see the same model, Min-hyuk offers to buy the recorder for Ji-eun. In the end, she declines thinking a recorder from Min-hyuk isn't the same as the recorder from Young-jae.
Min-hyuk invites Ji-eun out to eat but Ji-eun says she has to do all the chores that day.
Ji-eun admits she's lost the recorder. Young-jae scolds her but offers to buy her another one. He even says they'll eat out for dinner.
But Hye-won has just met with Min-hyuk. Again, he tells her off saying he only sees her as a sister. He says she doesnt really love him but only wants to own him. Hye-won is upset and calls up Young-jae.
As number one on Young-jae's list, he drops Ji-eun at the mall by herself and goes off to meet Hye-won. He tries to comfort her. He says she wants to own Min-hyuk because she loves him.
Ji-eun is waiting for Young-jae so they can have dinner. When she calls him up, Hye-won insist that Young-jae go so Young-jae tells Ji-eun to wait for a little bit. But then before Young-jae leaves, Hye-won goes after him, hugs him and asks him not to leave her. [hate-that-freaking-moment]
So Young-jae ends up bringing Hye-won home. The mall has closed on Ji-eun [I felt so sorry for her] and she has to go home by herself. She's upset but still, she waits for Young-jae to go home.
The next day, Young-jae invites Ji-eun to a movie. Before Ji-eun leaves the house, she receives a call from Hye-won looking for Young-jae. She says she can't contact him on his cellphone so Ji-eun promises to tell Young-jae she called.
Ji-eun and Young-jae watch the movie. He is only able to get in after the lights were turned off. After the movie, Ji-eun mentions Hye-won's call. Young-jae learns Hye-won is in the hospital. He makes a quick detour. In the hospital he's running all frantic and Ji-eun can't keep up. She's jealous when she sees Young-jae's care and concern for Hye-won. She hesitates going inside her room but Young-jae's father (who brought Hye-won to the hospital) sees her and tells her to go inside.
Young-jae's father explains Hye-won and Young-jae are childhood friends which is why he cares for her so much and so Ji-eun shouldn't worry about the two of them. After they get back at the Full House, Young-jae leaves again to look after Hye-won at the hospital. Ji-eun waits for Young-jae to return home safely.
The next day, Young-jae makes porridge for Hye-won. Ji-eun is jealous and asks him if she were sick if he'd make her porridge too. And then Young-jae tells her she ate porridge when she got sick staking out of the Full House (in Episode 2).
Young-jae visits Min-hyuk and warns him to never hurt Hye-won again. Min-hyuk tells him to think of Ji-eun first and to straighten his priorities.
Young-jae visits Hye-won in her clothes store. She dresses him up. She wants him to wear a ring, but she sees his wedding ring on. She asks him if it's okay to take it off and Young-jae says yes.
Later, Hye-won realizes Young-jae left his wedding ring at her store. At home, Ji-eun asks where Young-jae's ring is. She says it represents their promise to each other. When Young-jae sees Ji-eun is upset, he calls to have a new ring made for him. But Ji-eun draws a ring on Young-jae's finger instead. Then she says she'll give him a watch too! And then she charges Young-jae for the "jewelry", so Young-jae draws a watch on Ji-eun and charges more. To pay him back, Ji-eun says she'll give Young-jae an pair of sunglasses too, since he seems to have a fetish for sunglasses. And they run around and it's so cute.
