I know right! This character development is what I live for! I love how DG is able to stand up for himself and speak for what he wants now rather than letting Alex have his way with him! Plus, Alex needs DG to bring him out of this fantasy whe has trying to keep himself safe! They're a good couple but they need to help each other out ٩(๑❛ᴗ❛๑)۶
Jiwon will need a lot of help: he had a terrible family which never gave him the love he needed, and then that dude showed up, propably the only one who showed him real affection, just so then he can crush him. I think DG could help him with recovering from it since he seems like a sweet guy.
It will be super hard for Jiwon to open up again though, I can understand his character since I have experienced something like that too and I can tell you, this is some damage that needs serious help to repair.
For example, my relationship ended 4 years ago and I STILL have really serious trust issues, I can't let anybody near myself in any way and propably I'll just die alone.
DG went from beeing this innocent nice guy to having his heart destroyed by the person he admires most in the world to growing up and getting his life together while Alex has been hung up over one heartbreak for years never opening up to anyone. He needs this wake up call.