The Winter Prince by Constance Lopez

A beastly prince. A cursed land. One last hope.

Breaking his bargain with another fae has earned Revi, Prince of the Winter Court, a terrible curse: he lives as a beast and must watch his people suffer under a withering blight. The only cure? A heart freely given.
When a human patrol steals one of Revi’s magical roses, a sliver of opportunity strikes. He agrees to spare their lives in return for a woman who must live in his castle for a year and a day. But could such a beauty learn to love a beast like him?
Although Kienna was warned of conniving fae before her arrival at the Winter Court, the Winter Prince, while beastly, is not the monster she expected. Her dreams plague her—or more specifically, the enigmatic silvery man who walks them does. She’s determined to find him in the waking world and free him from his imprisonment.

Her dream prince begs her not to trust her eyes. But… can she trust her heart?