Showing Messing with Mac by Jill Shalvis

Taylor Wellington doesn't do relationships. She learned a long time ago that they were a recipe for heartache. However, she does do flings--steamy affairs that burn hot...and brief. And her sexy new contractor, Thomas "Mac" Mackenzie, has her thinking about burning up some sheets. Problem is, now that she's got him right where she wants him, she can't seem to stop playing with fire.

At the start, Mac is in perfect agreement with Taylor--they'll keep things hot and light, then walk away when they're done. But for reasons he can't explain he doesn't want to end this affair. In fact, he wants more. So now he'll just have to use some seductive persuasion to convince her that this is too good to let go....