The Marriage Contract by Rose Wulf

Pureblooded sylph Ophelia Flynn has a secret. She’s married to her neighbor. They’ve been married nearly ten years, but no one can ever know. She’s tired of the lie, and of hiding her feelings, but she’s trapped.
Her entire life has been built around a single, infuriating piece of paper.
Half-salamander Batson Crosse isn’t any more thrilled with their living situation than his wife. All he wants is to tear down the walls between them, but he doesn’t know if she feels the same. Disregarding the contract could do more than cost his parents their mysterious alliance—it could cost him Ophelia.
Their marriage comes into question when the couple is faced with an unexpected betrayal. Lines are drawn and old hatreds pulled into light as Batson and Ophelia find themselves forced to fight for the very marriage once forced upon them.
But is that really what they want? Or are they better off free?