The veela allure premise inherently creates a rich tension between biological determinism and free will that many authors explore. Draco, cursed or blessed with this allure, often finds himself horrified by his own power over Harry—it's not a conquest he earned through personality or shared experience, but a physiological hijacking. Harry's side isn't any simpler. His canon stubbornness and deep-seated need for authentic connection war against a magical compulsion he can't logically explain. The conflict isn't just 'do I like him?'; it's 'is any part of this feeling real?'. Is his protectiveness genuine care, or a veela-induced instinct? This can spiral into intense paranoia and self-doubt on Harry's part, while Draco grapples with self-loathing, wondering if anyone could ever care for him beyond the allure.
Some fics take a darker turn, framing the allure as a violation of consent even when Draco doesn't intend it. Harry might feel like his own mind and body are betraying him, leading to anger directed at Draco, who becomes a tragic figure unable to turn off his own nature. The resolution often involves finding a way to either nullify the allure's effect or, more interestingly, building a relationship so strong in its own right that when the allure is finally blocked, what remains is still profound. The best ones I've read make the allure the initial obstacle, not the foundation.
Less discussed but equally potent is the social conflict. The wizarding world's reaction to a veela, especially a male veela from a 'dark' family, adds external pressure. It plays into fears of creature inheritance, blood purity anxieties flipped on their head, and public spectacle. Harry, already tired of being a symbol, now has to navigate being the 'mate' of another kind of symbol. The emotional conflict becomes a shared burden of outsider status, which can either bond them or tear them apart under the strain.