The Ties That Bind Us by Deidra Duncan

Two enemies.
One prophecy.
A woman between them who could change everything.

Sean Archer has spent his life trapped in a small California town, forbidden to leave without knowing why. David Berkeley is destined for a life of crime, his strange gift of emotional coercion twisted into a weapon. They’ve hated each other for as long as they can remember.
But when a hidden realm drags them both across its borders, Sean learns he is heir to a kingdom on the brink of ruin while David is bound to the bloodline that once destroyed it. Now, their feud explodes into a prophesied war.
Caught in the middle is Anna Ainslan, a fiery warrior harboring a dangerous secret. She’s the teacher who can help David understand his treacherous magic, the muse who can inspire Sean to become the leader Luxoria demands in the face of looming war—but she’s also stealing her way into both of their hearts.

As conflict rises and fate tightens its grip, Sean, David, and Anna must decide if the ties that bind them are chains…or the only hope of saving two worlds. Because in a land where destiny rules, love might be the most dangerous rebellion of all.