One common theme is redemption. Callisto has a dark past, and in many fanfictions, love from Xena helps her find redemption. For example, in some stories, Xena's love makes Callisto question her vengeful ways and strive to be a better person.
One great piece of Xena and Callisto love fanfiction is 'The Unlikely Bond' on FanFiction.net. It beautifully explores their complex relationship in a way that's both touching and true to their characters.
I'm not entirely sure which specific 'Xena Callisto in jail' story you're referring to. There could be different interpretations within the Xena universe. However, generally, Callisto was a complex character. If she was in jail, it might be related to her many acts of vengeance. Maybe she was captured after one of her raids or attacks against Xena or others. But without more context, it's hard to tell the full story.
One possible reason is her acts of violence. Callisto was often on a warpath, attacking villages and people. So, her criminal actions could have led to her imprisonment.
In Greek mythology, Artemis was a virgin goddess, and there was no real 'love story' in the traditional sense between her and Callisto. Artemis was very protective of her virginity and the purity of her followers. Callisto was one of Artemis's nymphs. However, Zeus took advantage of Callisto in the form of Artemis, which led to Callisto's pregnancy. When Artemis discovered this, she was furious and turned Callisto into a bear as a form of punishment. So it was more a tragic story rather than a love story.
Yes, there are some out there. You can start by looking on some well - known fanfiction websites. However, keep in mind that fanfiction quality can vary greatly. Some might focus more on the emotional connection between Xena and Gabrielle rather than just the physical aspect of 'making love'.
One popular Xena and Gabrielle love fanfic is 'Soulmates Beyond Time'. It beautifully weaves a story of their love across different timelines, with vivid descriptions of their unwavering bond. Another great one is 'The Path of Love' which delves deep into their relationship, exploring how they support each other through various challenges. And 'Love's Endurance' shows their love in the face of great adversities, with emotional and engaging plotlines.
Perhaps there's a plot where Xena has an accidental love for a character from a different realm. She then has to navigate the cultural differences and the potential danger this new relationship brings to both her world and the other realm.