Speaker 1 is breaking up with Speaker 2 (Jiho). Speaker 1 is trying to clearly communicate his desire to end the relationship, while Jiho is trying to understand his true feelings and is hurt by his words.
지호야, 정말로 우리를 위해서 선택한 이별이야. 네 마음이 더 이상 예전처럼 느껴지지가 않아. 무슨 생각하는지 다 보인다. 하, 이 정도 말하면 알아듣지. 아 왜 이렇게 질척대지? 지- 진짜로 속마음이 보인다.
Jiho, this breakup is really for the best for both of us. My feelings for you just aren't what they used to be. I can clearly see what you're thinking. Ugh, I've said enough, you should get it by now. Why are you being so clingy? I... I can really see your true feelings.