Double Crossing the Alien by Nessa Claugh

The war has arrived. Lukrim lured human brides with lies and pretty propaganda, and they will stop at nothing to keep them.
Amira Wicslaw knows this, and she’s still doing what she can to help foment an underground resistance on Lukrim itself. The women at her side were lured to Lukrim with false promises of fresh air in exchange for their ability to reproduce with the blue aliens. Amira is doing everything she can to keep them out of sight and out of mind, even from their spouses. It’s a relief that most of the time, her own mates of twenty years want nothing to do with her
Jaxim is a military veteran, sworn to do everything he can to end the Lukrimian threat so the humans can be rescued, but when he meets the human woman running the resistance, his usual MO of ‘sneak in, sneak out’ takes on a whole new meaning. Amira has thrown her own safety entirely out the window to keep her people safe, and she reminds Jaxim too fiercely of his own long-lost mate.
As the lead on his strike team, Jaxim is the one who destroys alien strongholds, but Amira has completely undermined the one around his heart. They are going to have to work together to get Jaxim, his team, and the human hostages out of the line of fire before the war destroys everything they hold dear.