In many of these fanfictions, Jacob's character often develops a new sense of vulnerability. For example, in stories where he discovers he's pregnant, he has to deal with physical and emotional changes that he's not used to. Edward, on the other hand, might develop a more protective side. He has to step up and support Jacob, which is different from their previous dynamic.
I really like 'Forks' Newcomer'. In this fanfiction, it adds new elements to the story. The interactions between Edward, Bella, and Jacob are full of tension and unexpected twists. It keeps you hooked from the start as it plays with the existing dynamics in an interesting manner.
There might be some extremely niche fanfiction out there with this concept, but it goes against the established lore of the 'Twilight' universe in many ways. Vampires in the 'Twilight' world are undead and have different biological functions compared to humans, and werewolves also have their own unique biology. So while fanfiction can be creative, this would be a very out - of - the - box and perhaps not very common plot.
There's also 'Twilight Reimagined: Edward and Jacob'. In this one, the author completely reimagines the story. Edward and Jacob are forced to work together in a world where the Volturi are more powerful than ever. It has a lot of great character development and the plot twists keep you on your toes.
For Bella and Jacob's relationship, it could be a breaking point. Jacob might distance himself from Bella, feeling that she has completely chosen Edward over him. Bella, on the other hand, might feel guilty but also more committed to Edward.
The theme of self - discovery for Bella is also common. Through her relationships with Edward and Jacob, she often discovers more about herself, her desires, and what she truly wants in life. For example, in some fanfictions, she realizes that she has more strength and independence than she initially thought while dealing with the two very different men in her life.
Another theme is the discovery of their true feelings for each other. It often involves a journey of self - realization where both Edward and Jacob come to terms with their love that they might have initially suppressed. For example, in some fanfictions, they start as rivals but gradually realize their deeper emotions.
One common theme is the exploration of a non - traditional relationship. Since mpreg is not a typical concept in the original lore, it allows for a new way to look at Jacob and Edward's connection.
One common theme is the overcoming of their initial rivalry. In the original story, they are sort of enemies, so in fanfictions where they get married, there's often a story about how they put aside their differences.
The theme of acceptance is also quite prevalent. In these fanfics, they learn to accept each other's differences, whether it's Jacob's wolf nature and Edward's vampire nature. And often there's a theme of redemption, like one of them trying to make up for past mistakes in their relationship.