Soulless by Kate Rudolph

There’s nothing left in Raze. No love, no hate, nothing except the duty that he owes his people. But when he meets a fascinating human woman on a barren planet something deep inside comes back to life and for the first time in years he yearns for more.

When a mission for the Sol Intelligence Agency gets out of hand, Sierra will need to use every skill she has and work with a mysterious alien warrior who awakens an unquenchable desire within her. He’s cold and forbidding, but when he looks at her there’s a fire in his eyes that opens up a whole world of possibilities.

If Raze’s emotions fully return before he claims his denya, he might end up dead for good. There is no fighting destiny, especially for a doomed Detyen, and Raze already cheated fate once. To be with Sierra he’ll have to do it again, or neither of them will make it out alive.