What, precisely, was a boy pal? A boy sidekick, like Kaliman's Solin? An adopted son, like Batman's Robin? Jimmy wasn't a boy or even a teenager: he was tall and sturdy, with the standard comic book body-by-Michelangelo (since reporter outfits are not particularly revealing, almost every story required him to be in underwear, in a swimsuit, or ripped out of his clothes).
The "boy pal" relationship differed considerably from ordinary friendships:
1. It was physical. Superman and Jimmy flew with their arms wrapped tenderly around each other, a position that no one else, not even Lois Lane, rated.
2. It was romantic. Superman gave no one but Jimmy a gift of jewelry (a special signal watch).
4. It was exclusive: each had other friends and even other sidekicks, but in “Superman’s Super Rival” (Jimmy Olsen 37, June 1959), when Jimmy seems to be courting a newly-arrived superhero named Mysterio, Superman is so jealous that he challenges the rival “pal” to a fight.
5. It threatened heterosexual romance: in a fantasy story, “Jimmy Olsen’s Wedding,” (Jimmy Olsen 38, July 1959), Jimmy’s girlfriend agrees to marry him only under the condition that he never see or contact Superman again (one can’t imagine why). He complies for several years, but eventually he cannot bear to be separated any longer, and arranges a secret rendezvous with his “pal.” His wife discovers him in the act (of what?), shrieks in anger. and leaves him.
And the special signal watch was never seen again. Perhaps Jimmy returned it the day he told Superman over coffee, “it’s not you, it’s me.”