Responses
Basically he fell for her in his past life that's why he felt that. It's hinted that since he wasn't able to marry her in her past life he married someone who looked similar to her that's the black haired girl. I might be wrong but that's the spoiler that I read
Ah shit I skipped all the jaehyun chapters so I’m confused as to why he was all “badump” with sowon like that… He was such an interesting antihero at first but now it’s just sooo haaarddd to caaarrree