I had personal communication today, where the new translation of Kafka’s Diaries ( https://archive.is/BELrL) was discussed.

The original diary, published after his death by his closest friend, Max Brod, was ‘altered and censored’ to make him appear to be a saint. Interpretations of some of the new material disclosed can (in certain circles) imply that Kafka was either asexual, or interested in men.

Not (of course) that sex interests me, but I will point out that Kafka had more than a fair share of sexual encounters, both from professional ladies, to a reasonably steady stream of female companions, the last of whom had to held back from leaping into his open grave.

It is true he does also seem to feel that sex is a weakness of the flesh, and thus (perhaps) below the purity of a true artist. Maybe it was more than just his desire to write, that kept him up so late most nights. He was uncomfortable having sexual relations, but that did not stop his pursuits.