Under His Skin by Ashlee Mallory

Waverley Abbott needs a do-over. A fresh start in a new town, where no one knows she’s the ex-wife of a cheating, thieving fugitive on the run with what’s left of her money, her confidence, and her pride.
No one except for the grumpy, albeit enticing, PI whose meddling imploded her life in the first place.
Waverley is the last person Reynolds Cavanaugh expects to walk into his office asking for help in finding her ex, let alone asking for a job. He doesn’t have the patience for a spoiled, recently disgraced socialite, no matter how bewitching she is.
Only, there’s something about the deliciously curvy and interminably cheerful Miss Sunshine that he just can’t say no to, even as she’s interfering with his business, his life, and his tenuous hold on his sanity.
Sanity that’s seriously tested when a promising lead has them masquerading as a couple on a romantic weekend getaway.
Soon it’s not just the danger that’s heating up…