Blake felt a bit of his blood rising to his face at her comment about her and her other theoretical source of blood. Something inside of him really didn't like the idea of that. "U-um, well, I mean, I can just start drinking lots of water and figure out what is best for blood production. That way I can be your only source." he said, bringing his hand up to scratch the side of his face. He cleared his throat after a few moments and said, "I think we should probably get to class. We don't need to be late."