Yes, it has happened in some comic storylines.
Yes, it is. In some storylines, Spider-Man's identity is indeed revealed.
Yes, Spider-Man's identity has been revealed in some comic storylines.
Quite a few characters have been privy to Spider-Man's secret. For instance, J. Jonah Jameson has had his suspicions, and even some villains like Doctor Octopus have found out on occasion.
Yes, it does happen in some storylines within the comics.
In some comic series, his identity becomes public knowledge, while in others it remains a closely guarded secret. It varies based on the creative direction of each storyline.
His best friend could be the one. Since they are close, they might notice some strange behavior or coincidences that lead them to suspect Peter is Spider - Man. For instance, Peter always disappearing at the same time Spider - Man shows up.
Yes, there are. Spider-Man 2099 has its own comic series that explore his adventures in a dystopian future.
In many comic storylines, Iron Man has indeed taken on a mentoring role for Spider-Man. They have shared adventures and Iron Man has offered guidance and support to the young hero.
In many Avengers - related fanfics, Spider - Man's identity can be a major plot point. Some fanfics might explore the idea of his identity being revealed within the Avengers team earlier than in the official comics or movies. This could lead to various reactions from the other Avengers members. For example, Tony Stark might take on a protective role, while Captain America could be more concerned about the implications for the team's secrecy.
Spider-Man's birthday in the comics isn't specified precisely. But it's assumed to be around a certain time, depending on different storylines and interpretations.