The False King by Jude Marquez

With a missing king and his inexperienced husband leading the Cerith Kingdom, chaos reins.
It has been four months since Evander’s disappearance and even with the help of trusted allies, Alyx feels like at every turn he is tested and fails. There has been no word since Evander’s kidnapping and with every passing day, the kingdom grows restless, enemies approach their borders, and Alyx only waits for the whole thing to come down.
And it will be all his fault.

Far north, Evander faces an enemy he did not expect. Alone, beaten, starved, he can only wait for his rescue, but as more time passes, Evander fears the worst:
They think him dead and Alyx has moved on. With war looming and his allies becoming fewer and fewer, will Alyx choose to search for Evander? Or will he find it in himself to stand up and fight for his kingdom, in Evander’s name?