In fanfiction, their relationship could be one of mentorship. Athrun, with his more extensive combat experience, could mentor Lunamaria. He could teach her new piloting techniques and strategies. This would lead to a relationship where Lunamaria looks up to Athrun, and he in turn, respects her eagerness to learn.
One idea could be a story where Athrun and Lunamaria are on a joint mission. They start off with some misunderstandings due to their different combat styles. But as the mission progresses, they begin to understand and respect each other more. Eventually, they form a strong bond that helps them complete the mission successfully.
Definitely. These fanfictions often explore different aspects of their relationship. Some might delve into how they first fell in love, while others could be set in alternative universes where their relationship takes on different forms. The great thing about fanfiction is that it allows for a lot of creativity, so you can find all sorts of interpretations of their love story.
I'm not entirely sure as I haven't read it specifically. But generally, an Alex Hawke novel might be about adventure, mystery, and perhaps some espionage. It could follow the character of Alex Hawke through various dangerous situations and his attempts to solve problems.
As I mentioned before, FanFiction.net and Archive of Our Own are great places to start. They have a large collection of fanfictions from different fandoms, including ones related to athrun and lunamaria.
Athrun's character can be developed by exploring his past traumas and how they resurface in his relationship with Lunamaria. Maybe he has trust issues due to past betrayals, and Lunamaria has to work hard to break through those barriers. As for Lunamaria, you can develop her character by showing her adaptability in different situations, like when she and Athrun are faced with unexpected challenges, and how she uses her skills and wits to handle them, which in turn makes Athrun see her in a new light.
A possible plot is that Lunamaria gets injured during a battle and Athrun takes it upon himself to nurse her back to health. As he does so, they share many deep conversations and realize their connection is stronger than they thought. Or perhaps they are both assigned to a diplomatic mission where they have to pretend to be a couple, and through this charade, real feelings emerge.