Unlike the original story where Gaston is completely self - centered, in the fanfiction, he could start to care about Belle's feelings more. He might realize that making her happy is more important than just having her as a possession. So, he could start doing things like building a library for her or supporting her in her dreams of exploring the world. This would make their relationship more of a partnership rather than a one - sided pursuit.
In the fanfiction, Belle could be the one to take charge of the relationship. Instead of being the passive object of Gaston's pursuit, she could use her intelligence to guide Gaston towards becoming a better person. For example, she could introduce him to the concept of kindness and sharing, which are things he lacks in the original. This would completely change the power dynamic in their relationship compared to the original story.
Well, in the original story, Gaston is a brute who only wants Belle for her beauty. In the fanfiction, their relationship could start with Gaston actually trying to get to know Belle's mind. He might start reading books to impress her, which is a huge change from his character in the original. This could lead to a more intellectual connection between them.