Her Vampire Lord by Ines Johnson

HE OWNS MY DEBT BUT HE WON’T TAKE MY MONEY.
ALL HE WANTS IS ME.

Gaius Serrano is a mysterious figure in the world of wine. He’s arrogant. Darkly handsome.
And—my instinct warns me—dangerous. He’s the last person I want owning my family’s debt.
Since my parents died, I’ve been responsible for my sibling’s future and fortunes in the form of our family’s business. I’ll pay any price to get it back.
But he doesn’t want my money. He wants to master my pleasure. One night for one share of the business. If I give myself to him, I can earn my business back piece by piece.
I have no choice. I have to take the deal. I fall into his arms, into his bed. Into a world of passion that threatens to consume us both.

Because Gaius doesn’t want mere pieces of me. He wants all of me.
He’ll bring me to the edge over and over again until he breaks me.
Until he makes me his.