So he still loves her?? I don't get it

Yes which is probably why Jun was brought back to life. I assume the creator is gonna make him reveal it soon but silon definitely brought Jun back to life based on the fact he meant the world to Jin and aside from their daughter, he the closet thing to her that he can possess and honor in her death

Ugh. It's going to mess Jun up real bad when he finds out. I'm not looking forward to the fall out of that bombshell.