A Moment of Weakness in the Classroom

I can hardly believe I'm admitting this to myself, let alone anyone else. Last week, during my office hours, a student came by who I've been seeing on the side for months. We had planned to meet later that evening, but when he mentioned his anxiety about an upcoming presentation and asked if we could talk then and there, something in me snapped. I agreed, and before long, our conversation led to a moment of weakness, a fleeting, intense encounter right at my desk while students were outside the door. It felt so wrong, yet there was a rush to it that made it hard to resist. This is why I need to end this relationship, it's too dangerous for both of us.