Ash and Roses by N.B. Snook

Some curses aren't meant to be broken. Some beasts won’t be tamed. Quinn is the rightful ruler of Rosewood, but he refuses the title in favour of another—monster. Only able to maintain his humanity for a few days each month, he spends most of his time deep within the forest, devouring everyone and everything that crosses his path. Until the beast within him spares not just a human girl... but his sworn enemy. Abby is the oldest princess of Lunae—yet she will never sit the throne. After a lifetime of abuse at the hands of her father and his Commander, she flees the only home she’s ever known in search of freedom. That hope is shattered when she’s attacked by a vicious creature and soon finds herself the guest of a forest kingdom… and a prince who is anything but charming. Ash and Roses is a Beauty and the Beast inspired enemies-to-lovers fantasy romance.