Yes, there are many great Hanna and Caleb 'Pretty Little Liars' fanfictions. You can find them on popular fanfiction websites like FanFiction.net or Archive of Our Own. Some might focus on their relationship's development, while others could create alternate storylines for them within the 'Pretty Little Liars' universe.
One common theme is their relationship development. Writers often explore how they grow closer or face challenges as a couple. Another theme is mystery, since the 'Pretty Little Liars' world is full of secrets. Fanfictions might have Hanna and Caleb uncover new secrets together.
In some fanfictions, Mike and Hanna might have a really sweet friendship moment. For example, Mike could be there for Hanna when she's having a tough time with the 'A' drama. He might offer her some practical advice or just be a listening ear. It shows a different side of their relationship outside of the main plot of the show.
Perhaps Hanna discovers that Lucas has a connection to one of the early victims of 'A'. They team up to dig deeper into this connection, which leads them to some dark secrets about the town's past. Along the way, their friendship strengthens and they support each other through the tough revelations.
One interesting plot idea could be that Hanna and Alison find themselves in a parallel universe where their roles in the group are reversed. Hanna is the popular and feared one while Alison is the more insecure. Another could be a time - travel plot where they go back to before Alison's disappearance and try to prevent all the bad things that happened later. Or perhaps a plot where they team up to solve a mystery that is related to their families' pasts.
In fanfiction, their relationship might develop after a major event. Say, if Hanna gets into some trouble with 'A' and Lucas is the one who saves her. This act of heroism makes Hanna see Lucas in a new light. They then start to spend more time together, sharing their fears and secrets about 'A', and slowly their relationship moves from just friends to something more romantic.
If Aria gets pregnant in fanfiction, she might have to make some tough decisions. She could consider keeping the baby and trying to raise it with Ezra, or she might think about other options like adoption. Her pregnancy could also be a catalyst for her character growth. She'd have to become more responsible and deal with the consequences of her actions, which could be interesting to explore in the context of the Pretty Little Liars world.
Their friendship can be developed further by having them share more personal secrets. For example, Hanna could tell Alison about her insecurities regarding her family's financial situation even after things got better. Alison, in turn, could open up about her fears of losing her friends again. They could also have more adventures together, like exploring an old abandoned house in Rosewood and relying on each other during the spooky moments.
One possible storyline could be that Aria's pregnancy causes a rift between her and Ezra. Their relationship might face new challenges as they deal with the unexpected pregnancy. Maybe Aria's friends in the Pretty Little Liars group would have mixed reactions, some being supportive while others might be worried about how it will affect their secrets and the group dynamic.
Aria being pregnant in the fanfiction could also have implications for her safety. 'A' might see this as an opportunity to mess with her even more. She could be more vulnerable, and 'A' could use the pregnancy to blackmail her or expose her secrets. Plus, it could affect her school life and future plans. She might have to put her education on hold or change her career goals.