The Cheerleader is a novella written by Caroline B. Cooney. It was first published in 1991 and was the first book in the Vampire's Promise book series.
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Cheerleaders are beautiful, popular and exciting - girls that Althea longs to be. But Althea is nobody - she gets no phone calls, shares no laughter and has no friends. Then one day she meets him, a vampire who offers to make her a cheerleader in exchange for a simple bargain.