He didn't treat him like garbage. He wouldn't to set bonders to respect the wishes of his new partner. Shows he's actually a good person and a caring romantic interest.
Also, they were together for 5 years. That's not easy to let go off. Especially since it's come to the audience's light (not his yet) that his new lover is gaslighting him to believe he raped him, I'm shocked people don't see how cruel all of this is to Taejoo as well.
Together for 5 years? Lmao no, he searched for Yoon for 5 years .. and even if he was together that long that doesn’t excuse treating Yoon like he did, even bringing his new lover to meet him without even some notice, what he did was horrible and disrespectful.
He may have been forced into the relationship but that doesn’t mean he gets to treat Yoon like he Did, there is absolutely no way you can prioritize a one year (at best) relationship over your whole life with a partner you never even broke up with
Treat Yoon like what? Y'all acting like he beat him, or lied to him and judges him like Kwon does.
He's a hurt human being who thought he moved on but clearly didn't and still loves him. Even with that scene with all three of them, he doesn't push himself on him like Kwon does and his main concern is "are you alright?"
And that last part of your argument...have you ever even been in a relationship? Better yet, more than one? Because that's an immature view of relationships. Doesn't matter how long one was over the other. You respect the one you're with now which Taejoo does. We know now he shouldn't because that person is terrible but it definitely shows Taejoo's maturity and care for other people in this.
I do feel sorry for him but the way he handled things when the mc was back from the military sucks !! If he was hurting that bad why did treat like garbage not even listening to his side of things