At first, Arthur might feel betrayed. But as he comes to terms with Merlin's magic, their relationship can become more equal. Instead of the traditional master - servant dynamic, they start to become true partners. Merlin no longer has to hide such a huge part of himself from Arthur, and this newfound honesty can make their friendship more solid. They can start to rely on each other in different ways, with Arthur depending on Merlin's magic and Merlin relying on Arthur's leadership and protection in a world that still fears magic.
In most cases, it initially causes shock and confusion for Arthur. He has grown up believing magic is evil, so seeing Merlin, his closest friend, using it is a huge blow. However, it can also lead to a deeper understanding between them. Arthur realizes that Merlin has been using his magic all this time to protect him and Camelot. This can strengthen their bond as Arthur now sees Merlin in a new light, not just as a servant but as a powerful ally.
In many fanfictions, Merlin's magic acts as a catalyst. For example, if Freya is in danger, Merlin uses his magic to protect her. This shows Arthur that there is more to the world of magic than he thought. It can make Arthur more accepting of Freya, who is often associated with magic. Sometimes, Merlin's magic also reveals secrets about Freya that Arthur needs to know, which either brings them closer or causes some initial friction as Arthur has to adjust to new revelations.
Merlin could choose a moment of deep trust between them. After they have shared some important experiences, like winning a difficult battle together. He might feel that Arthur is more open - minded at that time and would be more likely to understand his use of magic. Also, it could be that Merlin is tired of hiding such a big part of himself from his best friend and decides to take the risk of revealing it.
If not resolved, it could lead to a breakdown in their relationship. Merlin's flinching might eventually push Arthur away, making him feel like Merlin doesn't trust him. This could cause Arthur to distance himself from Merlin, which would be a huge change from their usually close bond in most Merlin - Arthur stories.
In such a fanfiction scenario, the roughness can have various impacts. It could create a sense of tension and conflict in their relationship. Merlin might start to question Arthur's true feelings towards him. But on the other hand, this rough treatment could also be a sign of Arthur's internal struggles or misunderstandings. Maybe he's dealing with his own insecurities or pressures and taking it out on Merlin in the wrong way. As the story progresses, this could be a catalyst for character growth for both of them, with Merlin learning to stand up for himself and Arthur learning to be more empathetic.
Merlin can impact their relationship positively. He might use his magic to create opportunities for them to be alone, like creating a private garden for their dates.
Fanfiction often explores their relationship in many ways. For example, it can show how Merlin acts as a mediator between Arthur and Gwen. He might use his magic subtly to bring them closer or resolve misunderstandings. Sometimes, it shows how Arthur's sense of duty as king affects his relationship with Gwen, and how Merlin helps him balance that with his personal feelings.
During the time of Merlin's captivity, they could have long conversations that they never had before. Arthur might open up about his insecurities regarding magic and his kingdom, and Merlin could share his true feelings about serving Arthur. This would strengthen their bond in a new and unexpected way.
It could start with a slow realization of their feelings. Maybe they were friends for a long time and then suddenly, one day, they look at each other in a new light. After getting married, they become more protective of each other. Arthur might become more open to Merlin's magic, and Merlin would be more involved in Arthur's political decisions.
In the fanfiction, their relationship may develop gradually over a series of events. At first, they might have a bit of a rocky start, with Arthur being a bit oblivious to Merlin's true worth. But as they face challenges like political intrigue in the court, battles against dark magic, and helping the common people, they start to understand each other on a much deeper level. Merlin's selfless acts of using his magic for Arthur and the kingdom, and Arthur's growing respect for Merlin's abilities and character, all contribute to a relationship that blossoms into love. And this love is what leads Arthur to consider proposing to Merlin.
Well, in some fanfictions, the magic reveal happens during a magical attack on Camelot. Merlin is trying to protect the castle and its people. He uses his magic to counter the dark spells, and Arthur, who is fighting bravely on the front lines, looks back to see Merlin with a halo of magic around him, defying the dark forces. This kind of reveal not only shows Merlin's power but also his loyalty to Camelot and Arthur.