Fated to the Frost King by Robin D. Mahle

A brutal Frost King. A bastard fae bride. A bond neither of them wanted.

Everly Elarion never asked to be chosen. A bastard with a dangerous lineage, she’s spent her life surviving in the shadows of powerful men. Now she’s being forced to marry one.
Draven Ashwynter, the Frostgrave King, rules the Winter Court with an iron will and a heart carved from ice. Just when the kingdom teeters on the edge of ruin, the Court’s Visionary comes forth with a solution: the king’s fated mate has been found.
He’s meant to receive a match to his power. An equal. Instead, he gets Everly—illegitimate, defiant, and the last woman who would ever kneel to a king.
She doesn’t trust him. He doesn’t want her. But fate never asked their permission.
As enemies close in and old magics stir beneath the ice, their cold alliance begins to thaw into something far more dangerous than desire. Because in a court ruled by frost and blood, love isn’t just a weakness.
It’s a weapon.
And when war comes for the court, it may not be the kingdom that shatters first.

Fated to the Frost King is a slow burn, enemies-to-lovers romantasy, perfect for fans of Shield of Sparrows, Carissa Broadbent, and Sarah J. Maas.