Consorts of the Red King by Eden Winters

In deepest space the ruthless Federation lays waste to one rebel colony after another, leaving comrades-in-arms Van Orskey and Tayn Kassik without family, without a home, and without hope.
With nothing left but each other, they run contraband and smuggle fugitives from the safety of their ship, the Cormorant—with the occasional clandestine mission for the rival Coalition thrown in. Their heists have not gone unnoticed, though even the bounty on their heads doesn’t prevent them from being a thorn in the enemy’s side at every opportunity.
Pissing them off? Big mistake.
From the day of his birth Prince Jorvik of Akiak learned duty, wisdom, and honor from his father, leaving him ill-equipped to withstand betrayal by his Federation-puppet uncle. He has no love for the greedy off-worlders who plunder his world’s natural resources and enslave his people. To defeat his foe, he needs the cunning, fearlessness, and touch of treachery only outlaws can offer.
Two off-world mercenaries make unlikely partners in Jorvik’s quest for vengeance, but the more he learns of them, the more common ground he discovers. In each other’s arms they find passion, heat, and maybe, a reason for living—until their common enemy threatens to tear them apart.
To survive, they must take on the corrupt Federation.
And win.