The development of their relationship in this fanfiction could be quite interesting. Since Felicity is known for her intelligence and ability to hack into almost anything, she could be a great asset to Bruce Wayne. Bruce, on the other hand, has his own set of skills and resources. Their relationship might begin with a professional collaboration. As they spend more time together, they start to understand each other on a deeper level. They could face opposition from their respective friends and allies who might not understand their union. However, their love for each other could grow stronger as they face these challenges together.
In this fanfiction scenario, their relationship could develop through shared values of justice. Felicity, with her tech - savvy skills, could assist Bruce Wayne in his crime - fighting in Gotham. Maybe they meet when Felicity is on some sort of international tech mission and stumbles upon Batman's operation. Their initial interactions might be filled with mutual suspicion as they both come from different worlds. But as they start to work together, they realize how well they complement each other.
Their daily life would likely be filled with a mix of high - tech and vigilante activities. Felicity would probably be in the Batcave, helping Bruce upgrade his gadgets. In the morning, they might have a quiet breakfast together, discussing the latest threats in Gotham. Then, Bruce would go about his day as Bruce Wayne, handling his business affairs, while Felicity continues to work on tech projects for Batman's crusade at night. They would also have to keep their relationship a secret from the public eye to protect Bruce's identity as Batman.
At first, it might be a bit rocky. Harry is used to the wizarding world and its ways, while Bruce has his own set of rules in Gotham. But over time, they'd start to understand each other. Harry would learn about justice in a different way from Bruce, and Bruce would come to respect Harry's magical abilities.
In many fanfictions, their relationship starts off antagonistic. Poison Ivy sees Bruce as part of the problem with the environment due to his business empire. But as the story progresses, she discovers his alter - ego Batman is actually trying to clean up Gotham in his own way. This new understanding leads to a thawing of their relationship.
He might develop a greater sense of humility. Without the Batman persona to fall back on, he has to face his own limitations as a person. For example, he may struggle to get people to listen to his ideas for change when he doesn't have the intimidation factor of Batman.
Well, at first, they might be in denial about being brothers. Draco, with his pure - blood pride, and Harry, who has his own set of values. However, they could start to see similarities in each other. Draco might notice Harry's courage and Harry could see Draco's loyalty to his family (even if it's a different kind of family now). They could end up teaming up to solve mysteries within Hogwarts, and in the process, their relationship could transform from reluctant acceptance to a real, deep brotherly bond.
One possible plot could be that a magical anomaly causes a rift between universes and Harry Potter and Bruce Wayne are brought together. They initially clash due to their different upbringings and worldviews but gradually start to understand and respect each other. As they work together to close the rift, they fall in love and decide to get married, uniting their two worlds in a way.
At first, they might be a bit wary of each other. Harry is used to the magical world and Bruce to his crime - filled Gotham. But as they get to know each other, they would start to respect each other's skills. Harry would admire Bruce's determination in fighting crime, and Bruce would be intrigued by Harry's magic.
In fanfiction, Selina Kyle could be an ideal wife for Bruce Wayne. Their relationship in the Batman lore has always been complex and filled with attraction. In a married life in fanfiction, she could bring out a different side of Bruce, as she understands his dual life to some extent, being a cat burglar herself. They could have a relationship full of mystery and passion.
In a Musician AU, their relationship might develop through competition. They could be rivals in a music competition. But as they see the hard work and dedication in each other, they start to admire one another. This admiration could turn into friendship and then something more. They might start writing songs about their evolving relationship.
Their relationship could be shown as very protective. They are both fiercely protective of their baby and this brings them even closer together. They support each other in parenting decisions and in protecting their family from any threats.