The Sun and Her Shadow by Stephanie Combs:
 
A missing god. A fake marriage. And two hearts that were never supposed to find each other again.

Raelyn spent her life in the shadows, cursed to live without sunlight and tragically trapped under her vicious stepmother’s rule. But when a chance encounter with a masked vigilante awakens a strange power within her, Raelyn’s dream of a future free from her stepmother’s grasp is finally within reach. So long as the realm doesn’t die first.

Prince Kian’s search for a lost god leads him to Raelyn, the woman who stole his heart years before. While she doesn’t remember their past, a connection lingers between them. With the king’s ultimatum to choose a wife before the season’s end or be forced into an arranged marriage, Kian takes matters into his own hands.

A deal. A fake marriage to save them both. No feelings, no risk. But as old magic stirs and long-buried memories resurface, their careful bargain begins to fracture. The gods have other plans, and some bargains were never meant to last. Will their secrets bring them together or tear them apart?

The first in a series of interconnected fantasy romance standalones, Stephanie Combs will whisk you away on an adventure filled with heart, humor, and pining in this whimsical Cinderella/Robin Hood inspired re-telling.