Crowne of Lies by C.D. Reiss

Logan Crowne needs one year from Ella.
Twelve months living in his house, holding his hand, wearing his ring on her finger, and in exchange, she’ll get her father’s company in the divorce settlement.
They have one year to convince his skeptical parents that they’re happily in love, and he’s settled enough to run Crowne Industries.
Ella wants the company badly enough to live with a man who will never love her. She’ll sleep in his room and kiss him for show.
Her heart may melt whenever he’s around, and his touch may ignite a fire inside her, but surrender will break her heart.
She’s sure she can last a year without giving him her body.
She’s wrong.