At first, their relationship might be one of pity on Bella's part. She sees Edward as someone in need and wants to help. But as they spend more time together, old feelings start to resurface. Edward may be hesitant at first, being in a vulnerable homeless state, but Bella's kindness slowly breaks down his barriers.
Well, it could be that Edward is homeless because of some dark turn of events. Bella's encounter with him might be the start of a new adventure. She might introduce him to her friends in the fanfiction world, like Jacob, and there could be some tension as Jacob may not trust this new 'homeless' Edward right away.
One possibility is that their relationship could face initial resistance. In many Twilight fanfictions, Bella's friends or family might be concerned about the age difference. They could try to keep them apart, creating drama and tension in the story.
Their relationship might develop slowly at first. Since Edward is older, he could be more cautious. He might take his time getting to know Bella on a deeper level before fully committing to a relationship.
One interesting aspect could be how their relationship dynamics change. In the original, Edward was the vampire and Bella was the human, so reversing their roles might lead to a different power dynamic. For example, Bella as a vampire would have more physical strength and speed, which could make her more protective of Edward. Also, Edward as a human might struggle with his mortality compared to Bella's immortality, creating new tensions and storylines in the fanfiction.
There's also 'The Redemption of Edward Cullen'. This fanfiction explores Edward's past in more detail and how it affects his relationship with Bella. It adds new layers to his character and gives a fresh perspective on their love story.
One great fanfiction could be where Edward and Bella's relationship is explored more deeply in a different vampire society setting. For example, they might be in a vampire clan that has unique rules about human - vampire relationships.
In many Twilight fanfictions, Edward and Bella's kiss is often depicted as an extremely passionate and intense moment. Some fanfictions might explore different scenarios around this kiss. For example, it could be set in an alternate universe where they meet under different circumstances before the kiss. The kiss in fanfiction can also be used to show a deeper connection between them than what was shown in the original books. It allows the writers to play with the emotions and the relationship dynamics in a more creative way.
Sometimes in fanfiction, Bella might be more assertive when they meet. Instead of being the shy girl, she could be the one to initiate the conversation. This change in her personality can lead to a different dynamic in their relationship from the start.
One possible plot could be that they form a very different kind of relationship compared to the original story. Maybe in 1918, they are both involved in some historical events that shape their bond. For example, they could be helping victims during a war or epidemic, which brings them closer together in a more heroic and selfless way.