by refusing to elaborate or delve into the actual interesting points of conflict between them in favor of railroading them into sex scenes (which are all assault and rape). both suah and juhyeok's relationships to their parents/family and why they feel the way they do about their secondary genders are more interesting (worth screentime) than their forced sexual connection. I could use more introspection and backstory, especially for juhyeok! and for as much as suah gets the sympathy/pity edits with his sob stories, it doesn't really flesh out why he's calling his attachment "love" and showing it by stomping all over juhyeok's desires for independence. people seem to take it as a given that juhyeok would have treated suah like that if they'd grown up like they expected as alpha and omega, respectively, but I'm not so sure. I think they have different motivations/ideas behind "protecting" and "loving" each other and it shows in what they do.
there's so little substance to their relationship that would nurture mutual love past those idyllic childhood memories and base physical attraction/biological urges, so of course there's more "potential" and relatively less baggage with other characters.
and the creator is not doing a good job selling me on juhyeok "just being tsundere"/emotionally constipated or just struggling with unrealized feelings for suah when all of his rightful outbursts at having his boundaries ignored are played for laughs and brushed aside with no real addressing. I think all his problems with suah are serious and justified. is the problem really that they don't feel the same way about each other, or is it about how they treat each other? you might "love" someone, but can you trust them?
how does an author manage to make the side characters more interesting than the actual main pairing