As far as I look from the Korean translation everything woohyun did everything out of jealousy and only because he wanted Ha yan to only have him. He manipulated everyone around him, and suddenly he abandoned them all and took Ha yan, and they were probably together at the end. Woohyun got into yandere crisis lmfao (〜 ̄△ ̄)〜 sorry for my bad English
Spoiler warning
As far as I look from the Korean translation everything woohyun did everything out of jealousy and only because he wanted Ha yan to only have him. He manipulated everyone around him, and suddenly he abandoned them all and took Ha yan, and they were probably together at the end. Woohyun got into yandere crisis lmfao (〜 ̄△ ̄)〜 sorry for my bad English