Tempted By the Drakarn Shadow by Kate Rudolph

I have carved my life from stone, fire, and discipline. Nothing shakes me.
Then a small, furious human detonates my world.
Lexa is a soldier, an explosives expert, and a survivor. Her scent hits me like a blade to the heart, and I know one truth above all else:
She is mine.
But she doesn’t want to be.
She fights me at every turn, snarling, swinging, refusing the bond written in our souls.
Yet when she bleeds, I am the one who heals her. When she shakes, I am the one who steadies her. When her nightmares surface, I am the one she reaches for in the dark.
Our task has taken us deep into the Broken Plains of Volcaryth, where only the deadly and the desperate roam. It is a suicide mission with an impossible goal, but I will not let my mate face it alone.

The secrets we uncover may change our planet forever.
But if this world tries to break her, I will shatter it first.