One common theme is unrequited love. Often, Jacob loves Bella deeply while she is torn between him and Edward, creating a lot of angst. Another theme is loyalty. Jacob's loyalty to Bella and his pack is often explored. For example, in many fanfics, he has to choose between his duties to the pack and his love for Bella.
Some 'Jacob x Bella fanfic' focus on their relationship development from Jacob's perspective. They might delve into how he really felt during the times when Bella was still conflicted between him and Edward. For example, a fic could show his internal struggle when Bella chose Edward but he still had unwavering feelings for her.
You can start by searching on popular fanfiction websites such as Archive of Our Own (AO3). Just type in 'Jacob x Bella' in the search bar, and it will show you a list of relevant fanfics. You can then sort them by popularity or ratings.
One great bella x jacob fanfic is 'The Wolf's Love'. It delves deep into Jacob's perspective as he struggles with his feelings for Bella while she is involved with Edward. The story has some really intense emotional moments that make it a great read for fans of the pairing.
Some fan communities dedicated to the Twilight series might have curated lists of clean Bella and Jacob fanfics. You could join these communities and ask for recommendations. They often have members who are happy to share their favorite non - dirty fanfics.
Nature is also a recurring theme. Since Jacob is a werewolf, his connection to nature is strong. Fanfictions might use the forest or the outdoors as a backdrop to their relationship. It could be a place where they find peace together or where they face challenges. The natural world is often used to symbolize the wild and free nature of their relationship.
One great 'Twilight Jacob x Bella Fanfiction' is 'Fated Love'. It really delves into the complex relationship between Jacob and Bella in a way that the original series only hinted at. The author does a wonderful job of showing Jacob's internal struggle as he loves Bella but she has feelings for Edward too.
Another element is the relationship between Bella and Jacob prior to the imprinting. Their friendship or whatever form of relationship they had before sets the stage for how the imprinting will be received and how it will change things. Also, the reactions of other characters in the story, like the werewolf pack, towards this imprinting are important elements as they can either support or oppose it, which adds to the drama.
I'm not sure specifically which 'bella jacob therapist fanfic' is the best to recommend. You could try searching on popular fanfic websites like Archive of Our Own. They usually have a wide range of fanfics and you might be able to find something related to Bella, Jacob and a therapist in their collection.
Love is also a prevalent theme. It could be a love triangle type of situation or a deep platonic love. The lemon might be used as a symbol of something fresh and new in their relationships. For example, it could represent a new start or a unique aspect that draws them together. The fanfics usually explore how their relationships develop in the face of different challenges, like in the case of Bella's complex relationship with Jacob in the original story context. The lemon could also be a sort of metaphor for the sour and sweet moments they experience together.