Young-jae tells Ji-eun he'll move out and be with Hye-won. Ji-eun is hurt and accepts an invitation to go to Venice with Min-hyuk. Hye-won realizes Young-jae is in love with Ji-eun and finally sets him free.
Hye-won storms out of the Full House after seeing Ji-eun kiss Young-jae. Young-jae runs after her but Hye-won drives off crying and without talking to Young-jae.
Young-jae talks to Ji-eun. He tells the story of how when he was young, he decided to run away from home. He hated his father so much after his sister died. He said he would have run away, had it not for Hye-won. "Did she tell you not to go?" asks Ji-eun. No, Young-jae answers. But the money he had to run away, he used to buy Hye-won ice cream. "How can a man leave a girl crying like that?" He tells of a promise he made to Hye-won then: that he'd protect her all his life. He then tells her how happy Ji-eun makes him feel, how, with her, he seems like a different man. And how with her, he forgets about Hye-won. Now, he tells Ji-eun, he has to go to Hye-won and take care of her.
The next day, Young-jae tells Ji-eun he will be moving out in a week's time. When Min-hyuk asks Ji-eun out for lunch, she asks him to buy her beer instead. To Min-hyuk, Ji-eun cries and tells him what Young-jae told her. "Who keeps promises made when you were 9?" she asks.
Young-jae waits for Ji-eun to return home. Drunk, she tells Young-jae she won't let him go to Hye-won. "I will take care of you" she says and dozes off at the kitchen table.
Young-jae carries Ji-eun to her room and gently places her on her bed. With tears in his eyes he tells Ji-eun, "For me, don't get hurt". [i.e. Don't get hurt just because of me]
Thinking he is only hurting Ji-eun by her being with him, Young-jae tries to push Ji-eun away. He offers that she go stay at where they honeymooned. When Ji-eun asks why, he says reports will be coming in about them and she should stay there to avoid all the commotion. Ji-eun says that with bad things coming their way she should be at Young-jae's side.
Young-jae tells Ji-eun he is a jerk. He orders her around, screams at her. He tells Ji-eun to pack her bags and leave him. But Ji-eun won't give in. Young-jae tells her all the promises he's made Ji-eun are nothing, and that she is nothing to him.
Ji-eun gets the message. The next day, she leaves without saying where she will be and who she will be with. She goes out with Min-hyuk. During dinner, Young-jae and Hye-won goes to the same restaurant as Min-hyuk and Ji-eun and they share the same table.
Ji-eun and Young-jae taunt each other. They are again screaming at each other. After dinner, Hye-won sees how Young-jae is obviously hurt at seeing Ji-eun leave with Min-hyuk.
Min-hyuk asks Ji-eun to go to Venice with him. She accepts. When she asks Young-jae to at least drive her to the airport, Young-jae replies, "Don't want to."
With Ji-eun off to Venice with Min-hyuk, Young-jae goes to Hye-won. He has packed his clothes. In his car, though, he accidentaly calls Hye-won Ji-eun. He tells Hye-won he is worried about Ji-eun. How she can't speak English very well, how she gets sick all the time, if she's brought her medicine. Hye-won screams at Young-jae, "You shouldn't have let her go then!".
Young-jae then runs off to the airport, hoping to catch Ji-eun. When he is unsuccessful, he and Hye-won goes to a bar to have drinks together. He tells her he really liked Ji-eun, how happy he is when he is with Ji-eun and how he can't even protect her. "Then protect her from now on. Don't hurt her," says Hye-won. Hye-won urges Young-jae to be with Ji-eun. When Young-jae says he can't be with Ji-eun, Hye-won asks, "Why? Because of me?". And then she tells Young-jae how she's always known that he was in love with Ji-eun and how she's denied it all this time because it hurt her so much. She says sorry for having wronger her most best friends. "I am letting go of your hand."
Ji-eun is unable to leave Korea with Min-hyuk. She returns to the Full House running, looking for Young-jae. When she is unable to find him, she thinks he has left the Full House to be with Hye-won. She cries and Min-hyuk tries to comfort Ji-eun.
But Young-jae does return to the Full House. His welcome scene though, is that of Min-hyuk and Ji-eun, his arms around her shoulders. Young-jae is obviously hurt.
