How we cite our quotes: (Chapter.Section.Paragraph)
Quote #10
In a frenzy he poured joyous abjectness on paper to send to her, and he went to bed purified, as a man is after sexual love. He set down every evil thought he had and renounced it. The results were love letters that dripped with longing and by their high tone made Abra very uneasy. She could not know that Aron's sexuality had taken a not unusual channel. (47.3.3)
Weirdly, sexuality doesn't just have to take the form of sex. Aron is a young man with a lot of sexual energy, but he is too innocent to really recognize his feelings as sexual. Instead he gets off to his own self-righteousness and purity (not literally). It has got Abra all confused. The point here seems to be that sexuality is an unavoidable thing, even when it isn't overtly about sex itself.