Thunderstruck (Harlequin Blaze Series #851)

The lone cowboy… 

Damon Harrison never gets too involved. A cowboy at heart, Damon has turned his commitment phobia into a living—flipping houses. The only exceptions to that rule? His foster family at Thunder Mountain Ranch. And now those "exceptions" have talked Damon into working on a new project with a carpenter named Phil… 

Only, "Phil" is a nickname for Philomena Turner. She has a wicked way with carpentry and an even wickeder way of turning Damon's head. And the chemistry is like a lightning bolt of lust. But Phil wants a family and a home, and no hotshot cowboy—even a tantalizingly sexy one—will change that. All she can steal are a few nights of sizzling passion before she has to set this lone cowboy free…