I agree with you, a few chapters with explanation would be great and yes jaehyun needs a bit of time for himself however at the end of the day it's about healing yourself. He needs some healing and if seojin is helping him become a better person I feel like it's much better. He doesn't have any friends either so healing is healing, either with a person or alone and seojin seems like a guy who will give him time if he needs to, after all it's love we're talking about. It is my opinion on this
Agree on that too, he may need time for himself but since he was dependent on others from the beginning maybe he also need someone to move on.
Lets be honest here. The ending was too fast even if the whole story was good. There were a lot of things left unsatisfactorily. Like we need extra chapters to satiate us. Even if we don't want to hear anything about the psycho father, I'm freaking confused how he can still go to Germany with that tainted reputation? I also want to add to the drama how the son used Jaehyun to destroy his father. Welp, can't blame the guy he was also used by Jaehyun to act his revenge to the psycho father. And yes, I'm not using the names of the Kang father and son here. They don't deserve it.
Unpopular opinion: Jaehyun doesn't need any man after what happened. He needs time for himself. He was dependent on the father for how many years but instead of achieving his dream by hook or by crook, his lover broke it like literally.
Jaehyun you lil tsun tsun, you deserve better.