Kang Kyung Joon refused to even look at or talk to Gil Da Ran because he was mad at her for bringing Seo Yoon Jae's belongings with her. However, when he sees that Gil Da Ran decorated his room he realizes how immature he had been and attempts to make it up to her by taking her to a concert.
Kang Kyung Joon hides one of the concert tickets under some pastries and tells Gil Da Ran angrily, "I left something under the pastries so go pick it up." Gil Da Ran then finds the ticket and begins to walk home when she runs into Jang Mari (miss A member Suzy) who had stolen two movie tickets from Gil Choong Sik (Baek Sung Hyun) to go see the movie with Kang Kyung Joon.
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Jang Mari figures Gil Da Ran was also on her way to see Kang Kyung Joon, so she says, "Teacher, can I go to that concert instead? You don't have to pretend that he's Seo Yoon Jae at places like that anyway." Gil Da Ran hesitated since she had no logical reason to say no to Jang Mari's request.
Gil Da Ran eventually hands over the ticket that Kang Kyung Joon left for her. When Kang Kyung Joon sees Jang Mari instead of Gil Da Ran at the concert, he says, "It's whatever, it wasn't even something I wanted to see anyway" and leaves right away.
While watching Kang Kyung Joon walk away, Jang Mari asks quietly, "Kyung Joon... Do you still have feelings for the teacher?" and fell into despair.