Unfortunately Yours by Tessa Bailey

#1 New York Times bestselling author Tessa Bailey is back in Napa Valley with this hilarious rom-com about a down-on-her-luck heiress who suggests a mutually beneficial marriage of convenience to a man she can't stand... only to discover there's a fine line between love and hate.
After losing her job and her fiancé in one fell swoop, Natalie Vos returned home to lick her wounds. A few months later, she's sufficiently drowned her sorrows in cabernet and she's ready to get back on her feet. She just needs her trust fund to finance her new business venture. Unfortunately, the terms require she marry before she can have the money. And well, dumped , remember?
But Natalie is desperate enough to propose to a man who makes her want to kill him—and kiss him, in equal measure. 
August Cates may own a vineyard, but he doesn't know jack about making wine. He's determined to do his late best friend proud, no matter what it takes. Except his tasting room is empty, his wine is disgusting (seriously, he once saw someone gag), and his buddy's legacy is circling the drain. No bank will give him the loan he needs to turn the business around... and then the gorgeous, feisty heiress knocks on his door.
Natalie has haunted August's dreams since the moment they met, but their sizzling chemistry immediately morphed into simmering insults. Now, a quickie marriage could help them both. A sham wedding, a few weeks living under the same roof, and then they can go their separate ways—assuming they make it out alive. How hard could it be?
There's just one thing they didn't account for: their unfortunate, unbearable, undeniable attraction.