Definitely not. Spider-Man is a prominent figure in the Marvel universe and has no place in DC Comics. DC and Marvel are separate comic book entities with their own distinct characters and storylines.
Definitely not. Spider-Man is a Marvel icon and has no connection to DC Comics. The character's storylines and adventures are confined to the Marvel universe.
Definitely Marvel. Spider-Man has been a staple in the Marvel Comics universe for a long time. His adventures and storylines are all within the Marvel framework.
Well, there is. But you need to search carefully. A lot of fanfiction might focus more on the action or the superhero aspects rather than the romance. However, if you look for tags like 'Spider - Man', 'DC', and 'romance' on fanfiction platforms, you'll start to find some interesting stories. For example, there could be a story where Spider - Man meets Wonder Woman and they have a romantic encounter that defies the boundaries of their respective universes.