Reaper (The Devil's Riders 1) by Parker Daniels

I can’t marry my stepfather. I won’t do it! The man already has more wives than he can take care of. But a simple rejection won’t stop Alfie Barlow from pursuing me. Not even my own mother, his fifth wife, can make him back off. That’s why I must do the unthinkable. I'm going to escape our remote compound in New Mexico. And there’s only one person brave enough to help me do it. Reaper Jameson. The handsome President of the Devil’s Riders MC. The man I’m praying will be my salvation.

Reaper sells my people guns for what my stepfather calls the “End Times”. I see how the heavily tattooed biker looks at me. The way he undresses me with his steely blue gaze whenever we cross paths. I don’t know much about the world, but I know what he wants. I’m about to make the devil a deal he can’t refuse. My body for his help.
When he agrees, I’m more excited about surrendering myself to him than I am about escaping the cult I’ve been raised in for half my life. The only thing that frightens me now is not knowing what comes next. Because the truth is, I might be running from the demons of my past, straight into the arms of the Devil in my future!