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.
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.
It could be Lydia. They have a long - standing relationship in the show, and a secret marriage between them would be quite a shock. Maybe they eloped in a moment of passion and are now trying to figure out how to break the news to their friends.
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.
One possible plotline could be that they keep their marriage a secret to avoid the chaos it would cause in the wizarding world. They might have some sort of deep understanding that developed over time, which led to their union. Another could be that they got married for some sort of strategic reason, like protecting each other from certain threats.
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.
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 Harry discovers a prophecy that ties his future to Severus in a way that leads to them getting secretly married. They then have to navigate through the political intrigue of the wizarding world, with some characters suspecting their relationship and others being completely oblivious. Their relationship grows as they fight against those who would try to break them apart.
One interesting plotline could be Stiles teaming up with the Winchesters to hunt a particularly elusive and dangerous supernatural creature. Maybe it's a new type of werewolf that has powers they've never encountered before.
Well, in some fanfictions, there might be a plotline where Stiles discovers a long - lost connection between his family and the Originals. This could lead to a whole series of events where he has to navigate his new - found knowledge and the implications it has for his relationships with his friends and family back in Beacon Hills. He could also be in a position where he has to teach the Originals about modern ways of life, which would be a really fun and comical plotline in parts.
One interesting plotline could be Stiles initially being intimidated by the pack but then gradually forming deep friendships. For example, he might start off being scared of their supernatural powers but as he gets to know them better, he realizes they are just like him in many ways, with their own insecurities and desires.