I think he just didn't notice this back then but now he %100 knows because in the teaser there is a scene with Park Jin and him. Park Jin's hair is long (so it is a flashback) and there is that box in the room that is the evidence about Uk's identity.
Everybody is complaining about UKs everyday outfit, but JBY seems to favor Do-Hwas dress everyday. Since she moved…
It is actually a callback to her confidence in her beauty. Like Jang Uk said that she was always bragging about her unmatched beauty and because of that seeing her in fancy clothes was kinda strange.
Ok, some think he is taking too long to move on, and some think he is moving on early. What do you want to do…
For me, he is just a normal human. He still mourns for his lover but at the same time, he wants to live without even realizing it. And his heart already knows the woman who tries to give him peace rn, is who is he longs for.
*Destroying