Same here. Unlike many male teachers it doesn't seem to be infatuation, but strictly hormones.
Or maybe there is a self-destructive element in it somewhere, because they have to know it's almost certainly going to turn out very badly, very soon.
What are the chances that a teenage boy would brag about having sex with the exceptionally beautiful teacher who most of his classmates only fantasize about? [My guess - close to 100%, but do these women know that?]
I'd bet a week's pay there is alcohol, or some other mind-altering drug involved in this story... definitely, some BAD DECISIONS were made.