Obviously, I do not want to sound like a lecturer, but... Of course people in the Georgian age, and long before, knew about homosexuality. Of course there were male brothels. Of course men, especially in the Army and in the Navy, indulged in homosexual acts. But this would never have been discussed, certainly not in "polite society". And most certainly not between parents and children. And most, most certainly not between a mother and her adult son. And most, most, most certainly not as if she were aware - as J's mother seems to be - of a son's tendency/longing to go beyond homosexual acts into the realm of a 'gay identity' - a concept that, really, did not yet exist.