All the Pain of Promises by Hillary Raymer

An arranged marriage. A failed courtship. And broken hearts.

Solarius has grown accustomed to being unloved, though nothing prepares him for being tasked to marry the one female in Aeramere who loathes him. Granted, he and Narissa have a troubled past, but now they will be forced to endure whatever fate awaits them together…be it marital spats or impending war.
As suspicions toward his mother grow, Solarius knows he should focus on uncovering the truth of his bloodline, yet a new distraction with frosty green eyes has taken hold of his thoughts. Unfortunately for Solarius, he wants the one thing he can’t have—his wife.

An undeniable bond. A crucial promise. And devastating secrets.
After their disaster of a courtship, Narissa takes comfort in her loneliness, brewing potions and playing the harp. Now, there’s no escaping the male who stole her heart then cast her aside. When their magic claims one another in a moment of weakness, Narissa can no longer deny the bond between them, even if it’s the only thing she’s ever wanted.

But Solarius breaks promises as easily as he breaks hearts, and when he fails to keep his word, Narissa finds herself in a harrowing predicament. One that can only end in scandal. As shocking truths are revealed, Solarius and Narissa must confront their past, or risk losing all that remains of their future.

Because even the stars keep secrets.