Warlord’s Return by Cynthia Sax

Ariq is a barbarian warrior seeking a war.
He locates that battle when he meets Xareni.
* * *Ariq is one of Chamele’s top warriors. A genetic predisposition to fighting, paired with intensive training and experience, has honed the scarred male into an effective killing machine. He loves war, can’t live without combat.

The Succession Wars, however, have finally ended and the Chamele sector is now at peace. Seeking excitement and purpose, the barbarian warrior accompanies his Second to the Refuge, an outlaw settlement on Carinae E. He hopes to locate the battle he’s been craving there.

Ariq finds that conflict and more when he meets his fated mate.

Xareni owes the Ruler of the Refuge a favor. That’s the only reason she has returned to the settlement. She doesn’t like crowds or structures or a certain barbarian warrior who insists on following her everywhere. It doesn’t matter that there’s a connection between them, that he makes her burn with desire, that he looks at her with heat in his dark eyes.

She’s a monster and monsters don’t need anyone.