In fanfiction, their relationship could be developed through a series of misunderstandings. Maybe Anakin misinterprets something Padme says or does as a sign that she doesn't like him. This could lead to some angst - filled moments where they both have to re - evaluate their feelings. But through these misunderstandings, they could also come to understand each other better and ultimately strengthen their relationship.
Well, instead of the somewhat quick development in the movies, in fanfiction it could be a slow - burn relationship. They start as just friends, with Anakin seeing Padme as a role model. Padme, on the other hand, just thinks of Anakin as a sweet boy. As time passes, they gradually realize their deeper feelings through shared experiences like helping the poor on a far - flung planet.
One way to develop their relationship differently is to give Anakin more insecurities about being with Padme due to his Jedi status. Padme could then be the one to constantly reassure him. This would add a new dynamic to their relationship. For example, Anakin might worry that his Jedi masters will find out and he'll be expelled, so Padme has to come up with ways to keep their relationship a secret while also showing Anakin that it's worth the risk.