I've had an awful experience recently with an ex-friend, caught having an "affair" with his 16yr old employee. He's mid 40s. Turns out, the only illegal part is that there's pictures. He can fuck girls still at school legally, but he can't send her or request any pictures. It's insane.
Another layer is that the age of consent rises 18, but ONLY if you're in a school, healthcare, care-taking, Religion or sports club setting. According to the law, being her Boss doesn't mean he's in a Position of Trust or a Position of Authority over her. Yet, he plainly is.