@Maybe Its Tasha agreed, i feel as though at least some of that worry could be cleared up if Han just admitted that Shinwoo was his first love. He left everyone he dated because he kept trying to mold them into Shinwoo when that clearly wasn't possible. If Shinwoo knew that he was the original and that he was what Han was looking for all this time, it might just ease him even a little bit.
Fellow jjk and bllk reader, genshin player, and bl fanatic :]