Bonded In Blood by B.A. Stretke

He’s determined to save his company. He just met the immortal who’s determined to claim his soul.
Rhett Parks’ construction company is on the brink of collapse, and the only thing that can save it is the biggest job of his career: restoring the legendary Blood Rose, a vampire-owned bar. Rhett needs to nail this project on time, on budget, and without distraction.

But distraction arrives in the form of Damien Russo.
Damien has been brought in by Master Rose as the new General Manager. He’s a centuries-old vampire known only as “The Liquidator” for his lethal efficiency. To Damien, Rhett is more than just a human contractor; he is a fated beloved, a soul Damien has been waiting over two centuries to find. Their professional relationship immediately ignites into a raw, consuming passion that Rhett can’t understand or resist.

As Rhett tries to balance blueprints with a scorching new affair, a ruthless business rival and his shady crew move to sabotage the job, threatening to burn down everything Rhett has worked for—including his future with Damien.
Now, Damien must shed his manager’s facade and unleash the full extent of his power to protect his mate. Can a mortal contractor survive the deadly, cutthroat paranormal world Damien is forced to bring him into?

The claim has been made, and a powerful vampire never let’s go of his beloved.