One of the students in the year below me dropped out at 16 and immediately announced that she was in a relationship with one of the -married- teachers. Until then, she’d been publicly dating his son.
No-one could actually prove they’d been sleeping together before she turned 16 or quit the school, as age of consent here is 16 normally, with an exception for certain categories, including student/teacher relationships where its age 18, so he kept his job. Would have been about 1999-2000.
In a different way, it nearly happened to a friend of mine, who was a trainee teacher. He’d just got with a new girlfriend, who he’d met at a nightclub, age restricted to 18+. They’d met over the summer, and it was all going pretty well, until he showed up at his first student teacher placement at a local high school and guess who was actually 16 and in his new class? :smack: