hmm i'm not sure if jaehyun is going to find out about fake relationship with sunbae, since it's only going to last a day, i think?? they're going to an amusement park and they were followed by the stalker and she gave up after seeing them. the next time that hayoung met jaehyun, she saw him looking at jaehyun's girlfriend while they were on the bus, because for some reasons, jaehyun talked to that girl before he met hayoung that day (i think?? Or the day before) that's all i know so far.