Yoo Jin (Jung Jin Woon) kissed Hae Sung (Kang So Ra) on her cheek in Dream High 2 aired on 5th.
Yoo Jin became very famous as Eden and Hush dissolved and he was left as the only candidate for Super Idol. Yoo Jin got his buttons torn down by a crowd. Hae Sung sewed for him. Yoo Jin jokingly said, "You're ready for the marriage."
Hae Sung that she's good at this because she was such a menace when she was young and she dropped her buttons and socks and etc all the time.
As she says this Yoo Jin was drawn to her and kissed her on cheek. Hae Sung was so surprised, however Yoo Jin hides his heart telling her not to misunderstand.