“Teachers should not be allowed to be alone with a student, unless in plain view.”
They saw each other off campus apparently.
FWIW, back in my teaching days, there was a case where someone was accused of bad behavior, probably unfairly. After that, that rule was put in place....no contact with students alone, no meetings outside of school alone. It stopped all of the allegations, as just being alone broke that rule.
I do think that a big part of the problem is that teachers have become mentors who are supposed to become aware of students' personal lives. It doesn't help students or teachers focus on learning. I'm a dinosaur with this view, I know, but as a teacher I wanted to teach. If I wanted to solve their problems, I would've been a guidance counselor.