It could be really interesting. Imagine Peter's quick - wittedness combined with Jean's powerful telepathy. Their married life might involve Peter using his Spider - Man skills to protect their home and family, while Jean uses her powers to keep their minds safe from threats. They could also have some really fun interactions with other Marvel characters as a married couple.
You can try searching on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms have a vast collection of fanfictions, and by using the relevant tags such as 'Peter Parker', 'Jean Grey', and'marriage', you might be able to find some interesting stories.
Another theme is the idea of outcasts coming together. Jean is a mutant, often seen as different in society, and Peter is a superhero with his own set of problems. Fanfictions usually focus on how they understand and support each other in a world that doesn't always accept them. They form a bond based on their shared experiences of being 'other'.
One popular 'jean grey x peter parker fanfiction' is 'Parallel Universes'. It explores a world where the X - Men and the Avengers cross paths more often, leading to an interesting relationship between Jean Grey and Peter Parker. It has great character development and some exciting action scenes.
One great 'Peter Parker and Jean Grey Fanfiction' is 'The Unlikely Alliance'. It combines their unique powers in an interesting way. Peter's quick thinking and Jean's telepathic abilities make for a great story as they team up against a common enemy.
One plot idea could be that they meet during a multiverse - related event. Maybe the fabric of reality is torn, and they end up in each other's universes. They have to work together to fix the problem while also dealing with their growing feelings for each other.
Perhaps they get married in a secret ceremony because Peter is worried about his enemies using Jean as a target. Then, they have to deal with the secrecy and how it affects their relationship. They might also work together to fight crime in some way, with Jean using her own skills (which could be something like being a brilliant scientist or having some self - defense skills) to support Peter in his superhero duties.
It's appealing because it allows for a lot of creativity. Fans can take these two beloved characters from different comic universes and blend their stories. It can also explore their personalities in new ways. Maybe in a fanfiction, Peter is more serious and Jean is more carefree than in their original stories. This kind of character exploration and the potential for unique storylines are what make these fanfictions so interesting.
Some fanfictions focus on a love story between them. Since they are from different universes in the original comics, it makes for an interesting dynamic. Jean's alluring and powerful presence might draw Peter in, and his kind - hearted and heroic nature could attract Jean. They could go on secret dates, hiding their relationship from their respective superhero teams. However, they would also have to deal with the potential consequences of their relationship, like how it could affect their duties and the reactions of their friends.
Fanfiction.net is also a good place to look. Just use the search bar and type in 'Peter Parker x Jean Grey'. However, the quality can vary, so read the reviews and summaries carefully. Some stories might be more to your taste than others.