One common theme is longing. Calypso is often depicted as longing for Percy after he leaves her island. Another theme is sacrifice. Percy may have to sacrifice his own desires or plans to be with Calypso. For example, in some fanfictions, he has to give up his quests to stay with her.
In some fanfictions, their interactions are filled with a bit of tension. Calypso, having been alone for so long, may be hesitant to fully trust Percy at first. But as he continues to visit her and bring her lemons, she slowly warms up. They start to share stories, with Percy telling her about his adventures at Camp Half - Blood and Calypso sharing her knowledge of the island's secrets. Their relationship builds over time, and the lemons can be seen as a symbol of their growing bond.
Their relationship could develop through shared experiences. For example, they might go on a quest together to find a lost relic. During this quest, they learn more about each other's strengths and weaknesses and grow closer.
One character that would be really good to include is Circe. She has her own island and magic, and her interaction with Calypso could be fascinating. She might be jealous of Calypso's new relationship or try to use it to her advantage. Poseidon could also be included. As Percy's father, he might have an opinion on Percy's connection with Calypso. And finally, Thalia. She could be the voice of reason for Percy, helping him figure out his feelings and what to do about his relationship with Calypso.
One interesting fanfiction could be where Percy and Calypso reunite after a long time apart. In this story, Percy has finally found a way to return to Calypso's island. They pick up right where they left off, sharing their adventures and feelings. Calypso shows Percy new parts of her island that she had kept hidden before.
A really interesting Percy and Calypso love fanfiction is 'The Love of Percy and Calypso'. It starts with Calypso's longing for Percy after he's gone. The story then takes a turn when Percy realizes his true feelings for her might be stronger than he thought. It's filled with a lot of emotional moments between them. The fanfiction also includes some great descriptions of the settings, like Calypso's island, which adds to the overall atmosphere of their love story.
The theme of second chances pops up a lot. Since Percy left Calypso once, many fanfictions explore the idea of giving their relationship a second chance. Another is the power of the gods. The gods' influence on their relationship, whether it's Zeus' curse on Calypso or Poseidon's influence on Percy, is a recurring theme. And finally, the theme of sacrifice. There are instances where either Percy or Calypso has to sacrifice something for the other, like Calypso sacrificing her chance at freedom for Percy or Percy sacrificing his own desires for the greater good which affects their relationship.
In the fanfiction, perhaps there are misunderstandings between Percy and Calypso. Maybe she blames Percy for things he didn't do or vice versa. These constant misunderstandings can lead to Percy hating her.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - made stories, and you can search specifically for 'Percy Jackson and Calypso love' fanfiction. There are also many Percy Jackson - themed forums where fans might share links to their favorite stories in this genre.
At first, Calypso might be in awe of Percy's new godly form. But soon, they realize that they are equals in many ways. Their relationship develops as they face opposition from some of the other gods. They support each other through difficult times, like when some try to undermine their marriage. Percy, with his courage, and Calypso, with her wisdom, make their relationship strong and they become a power couple in the divine realm.