Sometimes, in these fanfictions, Dean is secretly married to a supernatural being. For example, he might be married to a fallen angel. This creates a whole new set of problems as he has to deal with the politics and power struggles within the supernatural world while keeping his marriage a secret from Sam and the rest of the hunting community. It can also lead to some interesting character development as Dean has to navigate his feelings for this other - worldly being and his loyalty to his family.
Sometimes, Dean is taken hostage by a powerful demon who has a vendetta against the Winchesters. This can lead to a complex plot where Dean has to use his wits and any resources he has at his disposal to escape or hold out until Sam arrives. There might also be elements of Dean making deals or trying to outsmart the demon.
You can try searching on fanfiction platforms like Archive of Our Own (AO3). There are a large number of Supernatural fanfictions there, and you might be able to find ones about Dean being secretly married. Just use the search function and type in relevant keywords.
There are often plotlines where the reader is transported into the Supernatural universe and immediately runs into demon dean. Their relationship starts off rocky, with dean seeing the reader as an easy target or a nuisance. But as the story unfolds, they discover that they are linked in some way, perhaps by a prophecy or a shared past life. This leads to a journey of self - discovery for both of them as they figure out their relationship and their roles in the supernatural world.
A plotline could be that on Halloween, Sam and Dean discover a town where every year, people disappear mysteriously. They suspect it has something to do with an ancient Halloween ritual gone wrong. As they dig deeper, they find that a group of cultists are trying to summon a powerful entity. Sam uses his research skills to find a way to stop the summoning, while Dean prepares for a fight.
Another plot could be Dean falling in love with an angel. In the Supernatural world, relationships between hunters and angels are complex. So, a fanfiction might explore how Dean's tough hunter exterior softens as he falls for an angel, and how they navigate the differences between their two worlds.
A possible plotline is that Hermione secretly marries a character who has a dark past. Maybe he was once involved with the Death Eaters but has reformed. They keep their marriage a secret because they know the wizarding community won't easily accept it. Hermione, being the strong - willed character she is, believes in his change and is willing to take the risk. In other fanfictions, Hermione might marry a character who is not from Hogwarts, like someone from Beauxbatons. They keep it a secret because of the potential rivalry between the two schools.
A plotline might be that Stiles got secretly married while on a trip away from his friends. When he returns, he has to figure out how to integrate his new married life into his old friendships. There could be comical moments like trying to hide his wedding ring or coming up with excuses for why he can't hang out at certain times. Also, the relationship within the marriage could be explored. Is it a marriage of convenience that slowly turns into love? Or was it a passionate love - at - first - sight kind of marriage that they now have to deal with in secret.
One possible plotline could be the discovery of her secret marriage. Maybe a nosy villager starts to suspect something and begins to dig deeper. This could lead to a series of events where Fem Naruto has to work hard to cover her tracks and protect her relationship.
One plotline could be that they secretly married to protect Ginny from a dark wizard who has a vendetta against Harry. By being secretly married, they think they can keep Ginny out of harm's way. Another could be that they did it on a whim during a romantic getaway and then decide to keep it a secret just for a while to enjoy their private time together.
Maybe they meet in a secret place during their school years, away from the prying eyes of their classmates. They start to exchange ideas and knowledge, which gradually turns into a deep emotional connection. This connection then leads to a secret marriage, and they have to deal with the consequences of hiding it from everyone they know.