i felt this way too!! i was a bit hesitant abt them being paired up but now i feel its their stark contrast that makes them so good together. i questioned if jintaes feelings for dawun were legitimate since he did say himself he didn't seem okay for another relationship, but dawun is a breath of fresh air to him. he (dawun) is straightforward and simple (in the sense that his wants are very clear), and that to me balances out jintae's overthinker tendencies.
in dawun's case, i agree that his initial interest was very much curiosity, but i guess that led to affection, as u don't rlly need some grand old reason to fall in love with someone. tho i like to think of it as he eventually fell for jintae's actual personality under the prim and proper persona that he put on. u don't have to agree, but this was just me rambling abt how i personally got on board with their relationship lol!! idk if uve read the most recent chapters, but they seem to rlly compliment each other :) so now im very fond of them!' :3

I don’t see what Dawun and Jintae like in each other. It feels like a relationship just for the sake of not being lonely. Maybe it’s cuz I’m just on ep 54 where they recently made things official but to be honest even before that there wasn’t really any tension between them. I never felt jintae had feelings for dawun and dawun’s “feelings” felt superficial as hell and more like curiosity than anything.
I’m hoping they get more depth in more side stories