He's Just Not That Into You - S1.E11

Khai was kissed by a girl which Third saw. This lead to a huge misunderstanding between them. Third decided not to go on the beach trip and Two decided to accompany planning to let Bone and Khai go by themselves. At the grocery shop they run into Bone who tells them as Two had decided not to go he would let Third and Khai go by themselves unaware that Third was not going. This led to Khai waiting in the station by himself the whole day as he had promised his friends they would all go together.