[cafard]

And I remember a mystery novel by Isaac Asimov, set in the 1950s or maybe early 1960s, in which an affair with a student is mentioned as the sort of thing that could get a professor fired. And I remember a fellow I once met in the mountain west ca. 1976, who had dumped his wife for a 19-year-old student. He was no longer a professor, and I gathered that this was why.