In the 14th episode of the SBS drama 'To the Beautiful You' that aired on the 27th of September, Tae Joon (played by Min Ho) and Jae Hee (played by Sulli) were seen enjoying a date.
It was late at night and they were on their way home when Tae Joon takes off his jacket for Jae Hee, who was cold. Their eyes meet during this process. Tae Joon then kisses her, attracting much attention.
However, Jae Hee doesn't know that Tae Joon knows that she is a girl. She therefore pushes him away and says, "Did the chocolate have alcohol in it?"
At the thought of Sulli leaving for America soon, Tae Joon says to Sangchoo the dog, "I can't pretend that Jae Hee is a boy anymore,"