SJW types call Heinlein homophobic, but he was just a man of his times, and in 1961 visionary in many ways of the social revolutions to come. However, if you were doing it today, his free love "nest" would be truly anything goes. Will that fly? It might, some genre series like The Magicians have been pretty 'in your face' with loose sexual boundaries. Even modern shows with gay characters are not very aggressive about showing seemingly straight characters experiment, unless it's the old trope of the guy who bullies the gay kid turning out to be latent.
This bit of prescience regarding the advent of effective birth control combined with medicine and law enforcement on women's liberation blew me away, even though he was talking about their woo-woo PSI stuff. In 1961 women were still regarded mostly as chattel, even in his books. Nobody's perfect.
What happens to that big industry-and to the shrill threats of moralists—when a female can conceive only when she elects to as an act of volition, when also she is immune to disease, cares only for the approval of her own sort … and has her orientation so changed that she desires intercourse with a whole-heartedness that Cleopatra never dreamed of-but any male who tried to rape her would die so quickly, if she so grokked, that he wouldn’t know what hit him? When women are free of guilt and fear-but invulnerable other than by decision of self? Hell, the pharmaceutical industry will be just a passing casualty-what other industries, laws, institutions, attitudes, prejudices, and nonsense must give way?”
