Too late she realised what exactly she was watching. The muscles in his arm pulled taut as he stroked himself up and down, moaning at the sensation. Oh god, why had she come in here, with her stupid rules, to see - this. She felt her legs grow weak, the little energy she had was now hyper focused on Draco’s wrist as it pumped a continuous assault. Her core ached to be touched, needed it even. She would not allow him the satisfaction of winning though, she would have to take matters into her own hands. 