Academic novels have a married man or woman, who is a dean or a provost or a president, sleeping with someone who is under their charge. In one case, the president (now divorced?) moves the paramour into the president's house. In another, the dean is involved with one of the professors in the department, having appointed their paramour to a position. In another a graduate student is after the thesis advisor. In all cases, what makes them work is the supposedly forbidden "fraternizing" and the infidelity, although in the latter case, perhaps the spouse is up to their own shenanigans.
Nowadays, the liaison may be hetero- or homo-sexual, although perhaps in the past that was also the case.
I know nothing nonpublic of actual fraternizing and infidelity. (I am out of the gossip loop, so if I know it is well known to everyone already.)