There could be. Fanfiction writers often come up with creative crossovers. But if it's a 'lemon' fanfic, it might not be suitable for all audiences. There are other fanfics that explore the dynamic between Spiderman's quick - wittedness and Wonder Woman's strength in a more family - friendly way, like them teaming up against a common villain.
The plot could involve them teaming up to stop a powerful villain who is threatening both their worlds. Spiderman's agility and scientific knowledge combined with Wonder Woman's combat skills and superhuman strength would make for an exciting story.
Another possibility is that there is a villain who is stealing technology from Stark Industries (where Spiderman sometimes gets his tech) and ancient artifacts from Wonder Woman's homeland. They are both independently investigating and then cross paths and decide to work together to stop the thief.
Spiderman's agility and ability to climb walls combined with Wonder Woman's super strength could make them an unstoppable team. For example, Spiderman could use his web - slinging to quickly get Wonder Woman to high vantage points, from where she can use her strength and lasso to take on enemies. Or in a fight, Spiderman can dodge attacks and then Wonder Woman can follow up with her powerful punches.
The Green Goblin could also fit well. He could form an alliance with some of Wonder Woman's foes. His chaotic nature and love for destruction would contrast with the heroes' quest for peace. He could target both of them, trying to break their partnership and cause mayhem in the city.
In a more complex combination, Wonder Woman's connection to the gods could give Spiderman a temporary boost in his powers. Maybe she calls on a god to enhance his spider - sense so that it can detect threats from other dimensions, which would be useful when they face a villain who has the ability to open portals to different realms.
A possible plot for spiderman x wonder woman fanfiction is that a group of super - villains from both their rogues' galleries team up. Spider - Man and Wonder Woman are forced to collaborate to take them down. During their adventure, they learn from each other's fighting styles. Spider - Man teaches Wonder Woman some of his acrobatic moves, and she in turn shows him how to better use his strength in combat. Their relationship evolves from reluctant allies to friends and perhaps more as they share their personal stories and values while fighting the bad guys.
One interesting crossover could be a story where Spiderman and Wonder Woman team up to fight a common enemy like Darkseid. Spiderman's agility and web - slinging skills combined with Wonder Woman's strength and lasso of truth would make for an exciting battle.
Maybe in the fanfiction, they are brought together by a common enemy who is a threat to both their worlds. As they team up, they discover they have more in common than they thought. Wonder Woman is impressed by Spiderman's sense of responsibility and his ability to always keep fighting no matter the odds. Spiderman is in awe of Wonder Woman's strength and grace. Their relationship develops, and they decide to get married. After marriage, they balance their personal lives and hero duties, and their union brings a new era of peace and cooperation between their respective hero communities.
One common theme is the 'opposites attract' concept. Spiderman is more of a street - level hero, while Wonder Woman is from a mythological background. Their different origins and powers make for an interesting dynamic. Another theme could be the 'forbidden love' aspect, as they belong to different superhero groups or universes in the original comics.