How can the relationship develop in a 'heroine despises hero' romance novel?

The development can be aided by the heroine's own growth. As she gets to know the hero better, she might realize that his dominance is not all bad. She could start to see it as a form of strength that can be beneficial for them both. And if the hero respects her boundaries and is willing to step back when she's really scared, it can lead to a more positive relationship.

Often, at first there is a lot of animosity. The heroine is understandably angry and scared due to being kidnapped. But as the hero shows some kindness or vulnerability, the heroine begins to see him in a different light. For example, he might protect her from other threats while she is in captivity.

One possible reason could be that the hero has a bad reputation in the society they live in. Maybe he is known for being a playboy or having a cruel streak, which makes the heroine despise him.

One way is through sincere apology. The hero must realize his mistake and truly feel remorse. He should then communicate his feelings to the heroine openly. For example, in some novels, the hero might write a heartfelt letter or plan a grand gesture to show he's changed.

By a sincere apology from the hero.

Through communication. If they start talking, the heroine may realize that the hero is not as scary as she thought. For example, the hero could share his own fears and dreams, which would make him more human in the heroine's eyes.

Slowly. The hero has to be patient. He can't rush the skittish heroine into anything. He might start by being just a friend, gradually earning her trust.

Challenges also play a role in developing this dynamic. External factors like family opposition or misunderstandings can test the hero's adoration. But if he overcomes these challenges, it shows the depth of his love for the heroine. For example, if the hero's family doesn't approve of the heroine because of her lower social status, the hero has to fight for their relationship, which in turn strengthens his adoration for her.

The plot could develop as the hero and heroine are forced to spend time together due to some external circumstances. As they interact more, they start to see the good in each other and the hero's hatred gradually fades. For example, they might be working on a project together or be stranded in a place.

Most of the time, the hero/heroine is initially repelled by the villain's actions or nature. But then, the villain may show a different side, perhaps a more gentle or understanding side in private. This creates a sort of internal struggle for the hero/heroine. In 'Poison Study' by Maria V. Snyder, Valek is a rather intimidating and morally ambiguous character. Yelena has to work with him and over time, she discovers his loyalty and other positive traits, and their relationship evolves into a romantic one as she peels back the layers of his 'villainous' exterior.