In fanfiction, the relationship between Eric and young Sookie can be very interesting. Some fanfictions might focus on how they first meet in a different way than in the original series. Maybe they meet in a more secluded place, and there's an instant spark that's different from the show's dynamic.
Their relationship would become more protective. Eric would be extremely possessive and protective of Sookie and the unborn child. Sookie, on the other hand, might start to rely on Eric more for physical protection and emotional support.
One common theme is the exploration of forbidden love. Since their relationship in the show had its own set of challenges, fanfiction often delves deeper into what makes their love seem so impossible at times. Another theme is the power dynamic between them. Eric is an old and powerful vampire, while Sookie is a young, telepathic human, and fanfictions play with how this affects their relationship.
To develop their relationship realistically, communication is key. Since Eric is a vampire and the reader is young, there will be a lot of misunderstandings at first. The reader might be scared of Eric's vampire nature, but he can show her his more gentle side over time. They could start with a friendship where they exchange stories about their different worlds. As they become closer, physical attraction can develop, but it should be a slow burn. For example, a simple touch on the hand can mean a lot at the beginning. And they should have common goals, like protecting the town from a new supernatural threat, which will bring them even closer.
In some fanfictions where Sookie meets Eric first, it could lead to a very different relationship dynamic. Eric might be more possessive right from the start. He could use his charm and power to draw Sookie closer to him, perhaps protecting her from the very beginning against the other supernatural threats in the True Blood universe.
One plot idea could be that Sookie and Eric have to face the vampire and human communities' reactions to their pregnancy. Since their relationship is already complex due to the vampire - human nature, the pregnancy adds another layer. Another idea is that they struggle to protect their unborn child from various threats, like other vampires who might see the baby as a threat or a valuable asset.
A time travel fanfiction could really dig deep into their relationships. Say they travel to a time where Godric was still a young vampire. Eric's relationship with Godric would be different than in the present. Sookie would be an outsider looking in on this different dynamic. This could create jealousy or a new sense of respect between Sookie and Eric. And as for Godric and Sookie, their relationship could develop in new and unexpected ways as they face the challenges of the time travel together.
It can greatly simplify the plot. Since Eric is a dominant figure, his early presence in Sookie's life can streamline the story. For example, there might be less confusion about Sookie's loyalties as she would be more focused on Eric from the start.
Once married, Sookie and Eric's relationship would change in many ways. Eric would have to be more careful with Sookie's safety as his wife. He might assign more guards to protect her. Sookie, on the other hand, would become more of a figure in the vampire community. She could use her position to advocate for better relations between vampires and humans. Their relationship would also face new pressures, like dealing with family members from both sides. Sookie's family might be wary of Eric, and Eric's vampire 'family' might have mixed feelings about Sookie. But through it all, their love would be tested and hopefully grow stronger.
One common theme is self - discovery. As Sookie becomes smarter, she discovers new aspects of herself. Another theme is the evolution of her relationship with Eric. With her increased intelligence, their dynamic changes, sometimes for the better as they can communicate more effectively.
Well, in fanfiction, there could be many different scenarios for Sookie being pregnant. It might be that she got pregnant by a character like Bill or Eric. Maybe it was an unexpected event that changes the whole dynamic of the relationships in the True Blood universe. The pregnancy could also be a plot device to explore new aspects of Sookie's character, like her strength and vulnerability as she prepares to become a mother.