Throne of Serpents by Frost Kay

He's the villain of her dreams and she’s the traitor of his nightmares.

Wren’s world shattered the day Arrik became king and he broke every promise he’d made to her. Fueled by rage and betrayal, she must double-cross her husband to save the realm from war. But with every passing day, as her devilish king tries to entice Wren to stand by his side, she finds herself struggling not to fall for his charms and seduction.

After years of scheming, Arrik finally held the world in his hands. But it wasn’t enough. Secretly, he’d always wanted someone to share it with, but his queen was hiding something from him. On the brink of civil unrest, he must secure his power at all costs. Even if it means losing the woman he loves