Spoiler . . . . . . . It's a spoiler i read somewhere. He wasn't able to confess to her then. The present ji ho is still as cold to her. In chapter 33 she'll watch his interview where he says he wrote a letter to his first love. That's when she realized after SAT she was sad as she screwed up the exam and was feeling down. Then Ji Ho called her and gave her a letter, she crumpled the letter and said 'Goodbye'
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It's a spoiler i read somewhere. He wasn't able to confess to her then. The present ji ho is still as cold to her. In chapter 33 she'll watch his interview where he says he wrote a letter to his first love. That's when she realized after SAT she was sad as she screwed up the exam and was feeling down. Then Ji Ho called her and gave her a letter, she crumpled the letter and said 'Goodbye'