Dohu needs to MOVE ON.
It's always him desperately chasing after Juheon, both in the first and second seasons.
If Juheon doesn't want you anymore, move on with your life.
It's not like Dohu committed a deadly crime, nor is it like he had a horrible relationship with Juheon where he treated him badly.
If he can't forgive you, that's his right.
BUT FOR GOD'S SAKE, STOP CRAWLING AFTER A GUY WHO ONLY REJECTS YOU.
MOVE THE FUCKING ON (╯°Д °)╯╧╧