A Secret Crush Turned Intimate

I know I shouldn't even think about it, let alone act on it. She's a student and my responsibility, not someone I should ever be tempted by. But we talked one day after class, just casual conversation, and there was an undeniable spark. Before either of us knew what happened, our lips met in a quick kiss behind closed doors. We both froze immediately afterward; her eyes filled with tears and she rushed out. Now every lesson feels loaded with tension and guilt. I hope she can understand it was a moment of weakness that will never happen again.