King of Flames by Ana Calin

Do I save myself, or do I save the world?

Xerxes the King of Flames is out to regain the power he lost to the King of Frost, so he can wreak havoc in the realms once more. He’s focused, vicious and, worst of all, he’s after me.
You see, I, Cerys Dark, am the only mage who can help him regain his full power. I’ve learned to hate him long before I met him, but I’ll be damned, when he comes for me it’s not a hideous demon that I face. It’s a king riddled with shadow, magic and the promise of guilty pleasures. In exchange for my help he promises me freedom from the fated mates’ bond that we share – a curse in its own right. His proximity entices me in all the wrong and yet oh-so-right ways, but staying under his control would eventually consume me. I have to resist this pull no matter what. On the other hand, releasing Xerxes Blazeborn into the worlds with full power means destroying them all. So here I am, faced with a choice—Do I save myself, or do I save the realms?