In 'The Dimidiums Book One: Bound by Love' by DM Yates, Trevor Dittmar, a dimidium tracker who is half vampire and half human, falls in love with a human named Janna, despite the enmity between their kinds. As their forbidden relationship develops, Trevor faces the challenges of hiding his vampiric nature and adhering to dimidium laws that require him to marry Janna. The story unfolds with danger from human and vampire adversaries, leading to a tumultuous marriage full of love, secrets, and threats from Trevor's family and other supernatural elements.