As a black alumnus:
The university president—Larry Schlissel—was fired for this nonsense a few years ago. Guess what? People on the academic side were trying to find ways to get him out of the paint for a minute and discovered his affair with another university employee. The University and the AD have so much factionalism it may as well be Westeros. So, how the hell did this idiot think an affair with another employee (who allegedly worked under him) wouldn't get out?
The Sword of Damocles is hanging over your head—act like it.
He knew he was going to lose his job and marriage/family, so he was probably hoping to convince her to recant and tell the investigators she lied. That's a pretty "typical" crash out tbh...