Just like in every rule book, there are exceptions and ways around it. It is not possible to have one email on two facebook pages, they will not let it happen. However, if you have multiple emails, you can create multiple accounts. The goal is to create the most realistic facebook page you can. Creating a fake account is considered "not allowed", even so, most of my facebook friends create accounts acting as their favorite novel characters. Some of the book characters are by the novels of Kresley Cole, Sharrolyn Kennan, and more. They talk to each other, create stories based off of their characters. And often times the authors accounts are their facebook friends.
However, I have four facebook accounts that I visit frequently. My original account, my favorite fake account, the "sister" of my favorite fake account, and a friend of the "sisters". I have made more friends, have interesting conversations, and have a list of protection acts that I created for myself. So far only one account has been deleted. However, that hasn't stopped me from creating another and reaching over 1,600 friends :)