She couldn't much blame him for his thoughts on Binns. "It's okay," Lily reassured him, "I find him boring too. I dozed off in his class a few times the other day." She giggled, thinking of their professor's droning voice. Lily was not one to slack off or sleep in classes, but the way she looked at it, it couldn't be helped in Binns's class.
She knew it was not like him to speak badly of professors and appreciated that he was letting his guard down enough to be truthful with her, even if it was about something small. She wanted him to trust her again. And if he ever did, she vowed that she would never let him get hurt again.