Alice and Bella are likely characters from a particular fandom. They could be characters from a book series, movie franchise, or some other form of media that has a group of fans (gp stands for general public or group of fans). Without more context, it's hard to say exactly which fandom they belong to.
Another common theme is adventure. Many fanfictions have them going on various adventures together, whether it's exploring new parts of the vampire or werewolf world or solving mysteries. It adds an exciting element to their relationship.
One key element is the relationship between Alice and Bella. It's often at the heart of the story, whether it's a friendship or something more complex.
This type of fanfiction is neither appropriate nor ethical. Forced bondage implies a lack of consent which is unacceptable in real - life relationships. Moreover, it may have a disturbing effect on the audience, especially those who are sensitive to such themes.
I'm not sure about a specific 'Bella and Alice, Bella is a Marine GP' fanfiction off the top of my head. However, you can also check out Archive of Our Own (AO3). It has a vast collection of fanfictions. You can use the search filters to narrow down to stories that involve Bella as a Marine GP and her relationship with Alice. Maybe start with the most recent ones as they might be more in - line with current fanfiction trends.
A common theme could be friendship. Since Bella and Alice are involved, their bond is often explored. Another theme might be Bella's challenges in her Marine GP career and how Alice supports her.
There's also 'Bella and Alice: A New Bond'. In this fanfiction, they face various challenges together which strengthen their bond. It has some really engaging dialogue that brings the characters to life. It's a great read for fans of their relationship.
Another theme could be self - discovery. Each character might go through a journey where they learn more about themselves. For instance, GP could be in a situation where they have to face their fears and in the process, discover new aspects of their personality. This can be intertwined with the relationships they have with Bella, Rosalia, and Alice.
One great alice bella gp fanfiction is 'The Unlikely Bond'. It beautifully explores the relationship between Alice and Bella in a unique way. The story has a lot of character development and the plot keeps you engaged throughout.
Fanfiction about their personal growth and development. For example, stories about Bella and Alice learning new skills or dealing with their own insecurities. This would be a positive and healthy alternative to the inappropriate theme.