He had stood up earlier the moment she had jumped to her feet and the books from the pile had dropped . He had been on his way to help her pick them up when pretty boy showed up , he thought . He scratched the corner of his eyebrow with his middle finger as he continued to watch the boy say something and Felicity laughed as she nodded . The boy took half of the pile in her arms and then Demetrius helped them by opening the door .

Question: What may happen before the books dropped ?
The books were put into a pile .