Back when I was teaching it seemed like once every 2-3 years a female student would get obsessed to the point of unhealthy/frightening. The sort where alarm bells just start going off, if they try to stay after class to "ask a question" you make sure 3 other students are staying in there too or otherwise make up some excuse about a meeting you have to be in and get out of there. The one worst-case scenario back when I was just 24-25, this girl was so far gone that she started making fake calls telling me to go to events and shyt that weren't even really happening, they were just transparent attempts to try to trick me into meeting up with her someplace outside school.
