Title: Secret Vampire, Night World Series #1
Author: LJ Smith
Published: April 1996
Publisher: Simon & Schuster Children's Publishing
The series takes place in a world similar to our own but one where vampires, witches, werewolves and shape-shifters live among humans without their knowledge. These supernatural races make up a secret society known as the Night World, which enforces two fundamental laws to prevent discovery: 1) Never allow humans to gain knowledge of the Night World's existence and, 2) Never fall in love with one of them.Meh. Sounds like a pretty overcooked plot. Today, anyway. God save LJ Smith. There was hardly any of this back in the mid 90s so it was new and fresh. How I wish I'd stumbled upon it then. Sadly I don't know how much I'd enjoy this one now. I guess it depends on how different it actually is.
In Secret Vampire, Poppy thought the summer would last forever. Then she was diagnosed with terminal cancer. Now Poppy's only hope for survival is James, her friend and secret love. A vampire in the Night World, James can make Poppy immortal. But first they both must risk everything to go against the laws of Night World. (from bn.com)