doyoung went from shy and innocent to distant and a bit cold is not as simple as “gotta love yourself more” this cha doyoung who we havent seen her backstory for ten years we dont know what she went through. Its more like kihyun is useless and cant handle his own problems yet dayoung just solved his in just one day by endangering herself but she was still careful by asking kihyon’s recorder to add more evidence but now she did all by herself. Idk what happened to cha doyoung but i dont think her problem is simple or easy to solve and who is this boyfriend of hers

Girl I know you can't choose who you fall in love with but you gotta love yourself more.