I Want You to Be in Pain - S1.E29

Out of revenge for Si Hyun, Se Joo brings Tae Hee to their hideout. There, he shows her videos and evidence of how they decided to target her for their own fun. He tells her that although Si Hyun first agreed to do this in order to please Soo Ji, at one point, he started to actually develop feelings for Tae Hee. Mean-while, Si Hyun finds out and tries to explain everything to Tae Hee. However, Tae Hee is not willing to take him back this time.