Like I said, this was pretty common in superhero comics at the time. A hero's identity was either public or several characters were in on the secret. Batman alone had numerous supporting characters not to mention other superheroes who knew his secret identity. And 616 Peter had MJ, Aunt May, Felicia, Norman, Ben Reilly, Kaine, Madame Webb, Eddie Brock and Daredevil as being aware of his secret identity.