Before World War II, teenage boys were expected to be concerned with the gang, or with one special pal, and think of girls as "poison." Those boys who expressed an interest in girls prior to graduating from high school were ridiculed by their peers as pansies and Percies, evaluated by school psychologists, and subjected to tense heart-to-heart talks with their parents.
David Nelson in November 1951
Left and below: in 1948, MGM arranged for Scotty Beckett (later Corky of Gasoline Alley) and his friend Roddy McDowall to go on a "see, they're not gay!" double date with Elizabeth Taylor and Jane Powell, but they seem to have ended up cuddling with each other.
In the January 1948 episode of The Life of Riley, for instance, blustering working-class family man Chester (William Bendix) is horrified to discover that his fifteen-year old son, Junior, plans to bring a boy to the big New Year’s Eve dance.
He tries to explain about “the birds and bees,” sexual difference, but Junior insists that he already knows about “all that jazz.”
When Junior admits that he likes girls “sometimes,” Chester takes charge, forcing the boy to break his same-sex date and telephone the boss’s daughter. She is noncommital, so Chester forces him to call the offspring of another VIP (resulting, of course, in two dates for the dance, both impossible to break). He is as hysterical in his insistence that Junior should like girls as fathers of the pre-War generation were hysterical in their insistence that their teenage sons should not.