Immortal Oath by Corinne O’Flynn

No one ever said true love was convenient.
The destruction of my coven and the bloodbath of vengeance that followed put me on the radar of every vampire hunter in Europe. Now I find myself in Las Vegas, Nevada where vampires roam among humans and the dark side never sleeps.
I feel her before I see her—Penelope is my mate, the one who makes my heart beat after centuries of stillness. But taking her means making even more enemies… just as the hunters are closing in.
On the run is no place to fall in love, but tell that to my beating heart.
Are you willing to taste immortality?