"You're on an awful lot of potions." She wished he would blink. Or turn away again. Her reactions were getting harder to control. Her brows furrowed at what he had said. She thought back to when he would have seen her take her potions... Perhaps someone had told him or... perhaps he had seen her take them. The only time that could have happened would have been at Theo's party. When she and Blaise had... well his first question made sense now. His questions about Blaise, his absence from the Manor since the party, the barely contained anger underlying his careful Occlumency. He had learned of (and seen, apparently) she and Blaise.