I understand both of their perspective. Jiwon was being "considerate" of Jungwoo because he "thought" Jungwoo might dislike him/fall out of love if he acted some sort of "obsessive/possessive". Jungwoo mentioned that he doesn't like that kind of relationship, but the thing is, Jungwoo was becoming like that, the " obsessive/possessive" one, and Jiwon has no idea about it. While Jiwon wasn't good at communication or showing his feelings, which made it look like he didn't care about their relationship, Jungwoo was doing his best to show his genuine feelings for Jiwon.
I understand both of their perspective. Jiwon was being "considerate" of Jungwoo because he "thought" Jungwoo might dislike him/fall out of love if he acted some sort of "obsessive/possessive". Jungwoo mentioned that he doesn't like that kind of relationship, but the thing is, Jungwoo was becoming like that, the " obsessive/possessive" one, and Jiwon has no idea about it. While Jiwon wasn't good at communication or showing his feelings, which made it look like he didn't care about their relationship, Jungwoo was doing his best to show his genuine feelings for Jiwon.