One possible plotline could be their initial encounter. Maybe Alec sees Bella in a completely unexpected situation, like during a supernatural event in the forest. Their eyes meet and there's an instant connection, a spark that neither can deny.
Another plotline might involve the challenges they face due to their different backgrounds. Alec is from his own supernatural group, and Bella has her own ties in the Twilight - inspired world. They might struggle to fit into each other's worlds while trying to build their relationship.
Another interesting fanfiction is 'The Journey of Bella and Alec as True Mates'. It details their journey together, from the moment they realize they are true mates. It shows how they grow and develop both as individuals and as a couple. They go on adventures and face many obstacles, which makes the story really captivating.
One common plotline could be them facing challenges from other vampires who don't approve of their relationship. Since Emmett is strong and Bella has her own allure, others might see their union as a threat to the vampire hierarchy or social order.
One interesting plotline could be their adventures in the forest together. They might discover a hidden part of the forest that has some kind of magical or ancient significance. Another could be them dealing with the reactions of their respective families and friends to their relationship.
One interesting plotline could be Jasper helping Bella to control her new - found vampire abilities in a unique way. Maybe he uses his own experience with self - control to guide her.
One interesting plotline could be how they navigate their relationship in a world full of vampires and werewolves. For example, they might face challenges from the Cullen family who have different views on their relationship. Another could be their journey to understand and accept their unique bond as mates, which might involve them going on adventures together to discover more about their vampire nature.
One possible plotline could be their journey of discovery. They might start by getting to know each other's pasts, like Bella learning about Kalona's history. Another could be them facing challenges together, such as dealing with other characters who oppose their relationship. It could also involve a plot where they have to protect each other from some sort of danger in their fictional world.
One possible plotline could be their adventures together in a magical world. They might face challenges like battling dark forces and their bond as mates helps them get through. For example, they could discover an ancient prophecy related to their union that they need to fulfill.
It could also be because the concept of true mates is very appealing. There's a sense of destiny and a deep, unbreakable connection in the idea of true mates, which draws readers in. In the case of Bella and Alec, it's exciting to imagine how their characters would interact in such a relationship.
In some fanfictions, it could be the Volturi. They might see Bella and Alec's relationship as a threat to their power or their rules about vampire relationships. They could try to break them apart or manipulate the situation to their advantage.
One popular 'bella and alec mates fanfiction' story could be the one where they face challenges from different vampire clans together. It shows how their relationship develops in the face of danger.