My Secret Shame

I never thought I'd find myself in this situation. As a high school teacher, there are so many rules about keeping personal and professional lives separate. But one day, after a particularly rough class, I found myself in my car thinking about one of my students. Not as a student, but...as someone else entirely. It was wrong on every level, and yet the thought wouldn't leave me alone. I know it's just a fantasy, that nothing ever happened. But admitting even this much to myself feels like crossing an invisible line.