Mating Fever by Grace Goodwin

Megan Simmons followed her entire Army unit into space as volunteers to protect Earth as members of the Coalition Fleet. Eighteen months later, on a Hive controlled planet, she is separated from her unit and trapped. She is certain death will have its day until an Atlan Warlord appears from nowhere and risks his life to save her. Lost and alone behind enemy lines, Megan will do anything to keep her sexy savior alive until one problem arises, and this one she can’t fight her way out of. Despite the danger, her Atlan Warlord’s beast takes one look at her and decides she belongs to him.

Nyko of Atlan never hesitates to charge into battle against Hive scum. When he sees a human soldier in trouble, he follows routine, ripping his enemies to shreds to save a fellow warrior. But when that warrior turns out to be a beautiful and curvy human female, the beast he’s been fighting suddenly breaks free with just one simple demand…MINE.