Well, perhaps the new love could be a mysterious stranger who arrives in Forks. He might be a vampire from a different coven or a werewolf with a unique ability. This new love could bring out a different side of Bella, more confident and adventurous.
In this fanfiction, the new love could be an old acquaintance of Bella's from her childhood who she had forgotten. Now, he reappears in her life. He could be a human with a special connection to the supernatural world in Forks. Their relationship might start with a rekindled friendship and gradually turn into love, which would cause some tension with Edward or Jacob, depending on the timeline of the story.
Perhaps it's a human with a very strong psychic ability. He is drawn to Bella because he can sense her connection to the supernatural. Their relationship could be based on mutual understanding of the secrets they both hold, and Bella might find his normalcy in some ways refreshing compared to her previous relationships with vampires and werewolves.
It could be a new vampire. Maybe a vampire from a different coven who comes to Forks and is immediately attracted to Bella's unique scent and her strong - willed personality.
One possible plot could be that Percy somehow ends up in the Twilight world. He meets Bella and they initially clash because of their different personalities and backgrounds. But as they face common threats, like a new type of monster that combines the elements of Greek mythology and the Twilight creatures, they start to fall in love.
Maybe Bella Swan could be transported to Asgard. She might be mistaken for a powerful sorceress because of her unique connection to the Twilight world. Then she has to navigate the politics of Asgard while trying to find a way back home.
Maybe Bella Swan discovers Cortez's work and it changes her perspective on something. For example, if Cortez is an artist, his art could inspire Bella in her own life in Forks.
One possible plot could be that Bella Swan, in this fanfiction, becomes a huge admirer of the Gilbert family. Maybe she is intrigued by their history in the town. She could start to study their family tree, trying to understand the secrets they hold. This could lead her to befriend members of the Gilbert family and get involved in their daily lives, which might be full of both normal family drama and some supernatural elements as in the original 'Twilight' and 'The Vampire Diaries' universes where the Gilberts are from.
Well, it could be that Bella is secretly an assassin all along in Forks. She's using her relationship with Edward as a cover while she's on a mission to take out some supernatural threats in the area.
Well, perhaps she could gain goddess - like powers after some sort of magical encounter. Maybe she starts to control the elements like fire and water. And then she uses these powers to protect her loved ones from the various threats in the Twilight world.
A possible plot could involve Bella being a huge Power Ranger fan and collecting all kinds of Power Ranger memorabilia. One day, she stumbles upon an ancient artifact that has some connection to the Power Rangers. This artifact gives her a special ability or a link to the Power Ranger world. She then has to keep this a secret from everyone in Forks while also trying to figure out how to use this new power to help those she loves. Along the way, she might face opposition from some of the more traditional vampires or werewolves who don't understand or trust this new power she has. As she delves deeper into the mystery of the artifact, she discovers a long - lost prophecy that involves her and the Power Rangers and their combined efforts to save both the human and supernatural worlds.
One possible plot could be that Bella discovers she has slayer powers. She then starts training in secret while still being involved with the Cullens. As she gets stronger, she uncovers a new vampire threat that is not like the normal vampires in the 'Twilight' world. This new threat is more powerful and she has to use her slayer skills to defeat them and protect both the humans and the vampires she cares about.