Blazing Sunlight (The Heir of Light & Dark #2) by Aline P Mora:
 
A bond forged through secrets.
A devastating, simmering attraction.
And beneath it all, the truth that will save or doom me.

The heart wrenching sequence of Among Shadows.
When Aila dared to put the safety of Niram’s prince – her closest friend and lover – above the spy master’s command, she didn’t expect to end up running from everything she’d ever known. As her deepest secrets were exposed and the prince became nothing more than a bitter enemy, she found herself thrusted in the midst of a rebellion, with a bright orphan and a lying captain as her only lifelines.

Now, as the Elementalists ready and the whispers of the Heir of Light and Dark rise, Aila will be forced to deal with the consequences of her lies. And when her ties to the Rebel Alliance deepen and the inevitable pull towards the former captain becomes too strong to ignore, she will have no choice but to confront the truth behind her mysterious power.

With the stakes higher than ever, Aila will need to accept who she was born to become or watch as the world she embraced go up in flames.

Trigger Warning: This book contains explicit content and darker elements, including mature language, explicit sex, violence, reference to torture and abusive relationships. It is not intended for anyone under 18 years of age.