As they poured over books about tethering charms, Hermione pressed close to Draco as she leant to read an excerpt, and he moved to the other side of the table. By the end of the day, as they were finishing up in the library, Hermione grabbed the book she knew came from a shelf high up in the "curses’ section. Asking Draco to steady the rolling ladder, she climbed up and reached to shelve the book. She knew the only way he couldn’t see right up her skirt was if he had closed his eyes.