honestly you were kind of right, but it was literally shown in the manhwa that dohu has some kind of problem with expressing himself.. for him, life's surreal.. and it was such a first for him to experience something like that, with juheon.. and dohu literally apologized alot of times already, why blame dohu now when it's already in the past? when their separation happened, dohu learned that he made such mistake and looks like he found the means to love and live.. that's why he's taking his chance now to get on the right track again with juheon.
im not blaming juheon or anything but, the reason why they're not on right terms rn or just not really interacting much is because juheon chose to have his boundaries, not because of him hating dohu, but for him to forget the past and have his peace.. and ik juheon literally knows how hard it is for dohu to realize his feelings.. DOHU HAS RECIPROCATING PROBLEMS OKAY
I don't know about others, but I think Juheon is completely justified in breaking it off with Dohu and being distrustful of him. I would be too. The problem was not him using him for material, but him not even properly apologising or telling him his true feelings. And no, the excuse of being bad at communicating doesn't excuse it because he is pretty good at communicating a lot of things, but he didnt even bother correcting the misunderstanding even when Juheon begged him to explain properly over and over.
Also you said he apologised already so he should be forgiven ? He didnt even apologise in the past , just let it go. No effing way. That apology sounded so onesided to me. Its like there i apologised so now forgive me already and come lets make out. No way

i like this..playing hard to get.. NO! I DONT FUCKING LIKE THIS COMMUNICATE AND GET BACK TOGETHER! FUCK SHIT!