Well, a plot could revolve around Prince Eric being curious about the male Ariel's voice. In the original story, Ariel's voice was a big deal, and here it could be too. Maybe Male Ariel has a special song that only Eric can hear. Also, they could go on adventures together, exploring uncharted parts of the ocean. This would bring them closer as they face various sea creatures and challenges. And perhaps there's a conflict where Eric has to choose between his duty to his kingdom on land and his love for Male Ariel. This would create a lot of drama and tension in the fanfiction.
The relationship can be developed realistically by first having them gradually get to know each other. Start with simple exchanges, like Male Ariel showing Eric the beauty of the ocean and Eric sharing stories of his land. Then, as they spend more time together, they start to understand each other's values and dreams. For example, if Eric is passionate about protecting his people, Male Ariel can support him in that. Also, they should face some conflicts together, like dealing with the distrust of their respective communities. This will strengthen their bond as they overcome these obstacles.
In the fanfiction, their pregnancy could be a time of great change for the kingdom. The people might be excited and also a bit apprehensive. There could be a lot of celebration preparations. Ariel and Prince Eric could go on little adventures together during her pregnancy, like visiting special places in the kingdom that they want to share with their future child. They might also face some challenges, like dealing with any jealous or envious characters in the kingdom who don't like all the attention the royal couple is getting because of the pregnancy.
A plot could revolve around Prince Eric and Ariel having a misunderstanding. Ariel misinterprets something Eric does and runs away to the ocean again. Eric then has to go on a journey to find her and prove his love. He faces many challenges in the underwater world, which he's not used to, but his love for Ariel drives him forward.
One idea could be that Ariel and Prince Eric go on a journey to discover a new underwater kingdom together. This would involve Ariel showing Eric all the unique and magical creatures she knows, and Eric using his human knowledge to help them navigate any challenges they face along the way.
Their relationship can be developed by showing them learning about each other's cultures more deeply. For example, Ariel can teach Eric more about the different species in the ocean, their languages, and their traditions. This would bring them closer as they understand each other's worlds better.
Fanfiction that involves sexual content, like 'ariel and eric sex fanfiction', is inappropriate. It objectifies the characters in an improper way. Instead, we should encourage fan - created works that are family - friendly and focus on aspects like their relationship in the context of the original story, like how they support each other and face challenges together.
One possible plotline could be that male Ariel saves Eric from a different kind of danger at sea. Instead of the traditional story, male Ariel uses his unique merman abilities to rescue Eric. And then they start to form a bond based on that event.
I'm sorry, I don't have a specific 'male ariel x eric fanfic' to recommend directly. You could try searching on fanfic platforms like Archive of Our Own. There might be some creative works there that explore this pairing.
A great way to develop their relationship further is to show them building a life together. They could start a project like building a lighthouse that has a special connection to both the land and the sea. It would be a symbol of their love and unity, and during the process of building it, they would face challenges, make compromises, and grow even more in love.