In a fanfic, their relationship could be more of a partnership against the corruption within the Jedi Order. They both notice things that are wrong, but in the canon they go about it in different ways. In this alternative relationship, they could join forces secretly. They'd communicate in code, meet in hidden places, and work towards reforming the Order from within. This would be a much more involved and positive relationship compared to what we see in the official Star Wars story.
Well, in the canon, they don't really have a significant relationship. But in a fanfic, they could start as rivals in the Jedi Temple. Anakin, with his brash ways, and Barriss, with her more traditional Jedi views. But then, after being paired on a diplomatic mission, they see each other in a new light. Anakin could learn more about the strict Jedi code from Barriss, and Barriss could understand Anakin's unorthodox methods better.
They could develop a relationship where Barriss becomes a sort of mentor to Anakin in some aspects. Since Barriss is very much in tune with the Jedi teachings, she could help Anakin deal with his inner turmoil and his fear of losing those he loves. This would be a different dynamic from the canon where Anakin often felt alone in his struggles. Their relationship could grow into a deep friendship based on mutual respect and the sharing of knowledge.
In fanfics, their relationship can be more openly affectionate. In canon, it's a bit more reserved. For example, some fanfics have Anakin showing more paternal love towards Ahsoka in a very direct way, like hugging her often, which is not something we see a lot in the movies or shows.
They interact in a complex way. Anakin is often impulsive and Barriss is more composed. So, sometimes Anakin's actions might startle Barriss. For example, in a battle situation, Anakin might rush in head - first while Barriss would be more strategic. But they also respect each other's abilities. Anakin respects Barriss's connection to the Force in a more spiritual sense, and Barriss respects Anakin's power.
One idea could be a story where Anakin and Barriss are forced to team up on a mission to a remote planet. They start off distrusting each other due to their different beliefs and allegiances within the Jedi Order. But as they face various challenges like dangerous native creatures and a Sith - influenced local warlord, they gradually learn to understand and respect one another.
In fanfiction, their relationship develops as Ahsoka grows in her Jedi training. Anakin is not just a master but also a friend at times. He guides her, and as she matures, they start to see each other in new ways. There are also times when they have disagreements, which further shape their relationship as they learn to understand each other's perspectives better.
Their relationship could be portrayed as more of a partnership in the Clone Wars. Instead of just a romantic couple, they could be shown as two people with different skillsets who are equally important in achieving victory. For example, Padme could be more involved in the military strategy discussions with Anakin, using her political knowledge.
In fanfiction, their relationship could develop more quickly towards mutual understanding. Maybe Luke could convince Vader to turn away from the dark side much earlier, and they could start training together as Jedi. This would be a huge shift from the original story.
Another way their relationship develops in fanfiction is when Ahsoka is wrongly accused again. Anakin stands by her this time without hesitation. This event cements their relationship as Anakin realizes how much he values her. They then start to train together more privately, sharing their unique insights about the Force, and this makes their connection even deeper.
Their relationship could start out as a wary alliance. Anakin, being a Jedi, might be a bit distrustful of Prince Fand at first. But as they face challenges together, they start to respect each other's abilities.
Character development in these fanfics also comes from exploring the relationship dynamics. How does Anakin's fall to the Dark Side change the way Padme sees him? Writers might show Padme's struggle between her love for Anakin and her loyalty to the Republic. They could also explore how Anakin's actions impact Padme's political standing and her relationships with other characters in the Star Wars universe.
Perhaps a story where Anakin and Barriss are both sent on a diplomatic mission to a war - torn world. They have to negotiate peace between two warring factions. Their different views on the Force and how to use it in such situations could cause some friction at first, but eventually they find a way to work together and bring about a truce.