Sorry if it's messy it's currently 5 am... I think that Shin Yooyoung was really Kwon's husband and the white haired guy is a completely different person. The past Shin (black hair) treated Kwon like shit while this other (white haired) we saw at the end of the dream was actually the Shin we see in the present (implying he's another person from the black haired Shin). He cared for him and actually loved him not like the past Shin, maybe past Kwon cared deeply for the other Shin instead (black hair) and that's why (white hair) is FAKING to be the (black hair) Shin and lying about how (black hair) was in the past so that he could take the role of being his husband, maybe they had a fall out that led to Kwon choose the other Shin (black hair) instead of the other Shin?
Sorry if it's messy it's currently 5 am...
I think that Shin Yooyoung was really Kwon's husband and the white haired guy is a completely different person. The past Shin (black hair) treated Kwon like shit while this other (white haired) we saw at the end of the dream was actually the Shin we see in the present (implying he's another person from the black haired Shin). He cared for him and actually loved him not like the past Shin, maybe past Kwon cared deeply for the other Shin instead (black hair) and that's why (white hair) is FAKING to be the (black hair) Shin and lying about how (black hair) was in the past so that he could take the role of being his husband, maybe they had a fall out that led to Kwon choose the other Shin (black hair) instead of the other Shin?