Nerd in Shining Armor by Vicki Lewis Thompson

Winner of the Heart & Scroll Madcap Award in 2004.

From the publisher (source: The Internet Book List):
For Genevieve Terrence it seemed like a dream come true: a weekend alone on Maui with her sexy boss, Nick Brogan. But little did she know that Nick had dreams of his own -- a nefarious scheme that nearly got her killed on the flight over the Pacific. Lucky for her, brilliant computer programmer Jack Farley was on board and quick-witted enough to crash-land the plane. Now Jack is her sole companion on a remote desert island with nothing but guava trees and sharks for company. Who'd expect the shy genius -- and the least alpha male she knows -- to turn out to be the uninhibited stud of her wildest dreams?

Saving Genevieve's life has made Jack a hero in the eyes of the woman he has secretly lusted after for months. Now they're alone together in a tropical eden where they're free to give in to their every sensual whim. But when some nasty unfinished business puts them at risk again, Gen will learn there's nothing quite as dangerous as a fully aroused ex-nerd who'll move heaven and earth to protect the woman he loves...

This book is part of the "Nerds" series.
Here are some other books from this series: