Story about a man whose childhood friend doesn't age

Question

It's a story about a man who has a childhood friend that doesn't age. The man visits his friend, and discovers that his friend's childhood has continued in a sort of alternate universe. His friend listens to new episodes of canceled radio programs from back in the 50's or so (or maybe television programs, I'm not sure). His friend's mother feels a great deal of anxiety about the situation. One day, the man takes his friend outside to see the world, but this causes his friend to suffer a severe headache (or something). Shortly after, his friend passes on.

The main themes are childhood, nostalgia, stuff like that. It's a bit of a riff off Peter Pan.

I believe I only read the summary of this story, and that it's a short story (but it could be something else, like from television). Maybe I read about it on Wikipedia but they removed the page.

Answer 1

Sounds like Jeffty Is Five by Harlan Ellison.

"Jeffty is Five" concerns a boy who never grows past the age of five — physically, mentally, or chronologically. The narrator, Jeffty's friend from the age of five well into adulthood, discovers that Jeffty's radio plays new episodes of long-canceled serial programs, broadcast on radio stations that no longer exist. He can buy all-new issues of long-discontinued comic books such as The Shadow and Doc Savage, and of long-discontinued pulp magazines with new stories by long-dead authors like Stanley G. Weinbaum, Edgar Rice Burroughs, and Robert E. Howard. Jeffty can even watch films that are adaptations of old pulp fiction novels like Alfred Bester's The Demolished Man. The narrator is privy to this world because of Jeffty's trust, while the rest of the world (the world that grew as Jeffty did not) is not. When Jeffty's world and the "real" world intersect, Jeffty loses his grip on his own world, eventually meeting a tragic end.