David is reading a book to Erin at his house. Dylan knocks on the door to ask David if they're friends. David goes out on the porch and closes the door so Erin doesn't overhear the conversation. Dylan mentions that he knows how Gina played David, and that David's Dad must be "so proud" that David is seeing her. After he walks away, David turns around, and the door is wide open, so Erin heard the entire conversation.