The Booby Trap by Anne Browning Walker
Harvard PhD student Bambi Benson does undercover research at a dive bar. Local celebrity Trip Whitley mistakes her for just another waitress, and since he hopes to ruffle the feathers of his well-connected family, he suggests that Bambi take on the role of his girlfriend, and receive compensation for her efforts. Bambi agrees and formulates a trap: Trip will realize the error of his ways when she reveals her true identity, and teaches him not to judge base on appearances.
Pixel Entertainment, $14.99, September 1, 2012, ISBN #: 978-1-938511-01-1