At first, Potter didn't say anything, the both of them simply stood there, silently appraising each other. In the middle of the silence, Draco had hoped that Potter would agree to lift the curse and that would be it, they would never speak of the matter again. Maybe he'd even obliviate the Gryffindor, for good measure. What ended up happening, instead of that, was a slow change in Potter's expression. His eyes going dark, and his expression closing off.