Fall headfirst into an unforgettable romantasy with The Irresistible Urge to Fall for Your Enemy, Book 1 in the Dearly Beloathed Duology by debut author Brigitte Knightley. This instant New York Times bestseller delivers an irresistible blend of slow-burn romance, deadly rivals, forbidden attraction, sharp wit, and high-stakes fantasy. While this novel concludes its central story arc, it is best read as Book 1 of the Dearly Beloathed Duology.

When elite assassin Osric Mordaunt contracts a mysterious and potentially fatal illness, he has only one chance of survival.

The healer who can save him belongs to the very order he has spent his life opposing.

Aurienne Fairhrim, a gifted healer of the Haelan Order, is overwhelmed caring for children suffering from the return of a deadly disease long thought eradicated. Desperate for funding to save countless lives, she reluctantly agrees to help the enemy assassin who unexpectedly appears at her doorstep with an offer she can't refuse.

Forced into an uneasy alliance, Osric and Aurienne race to uncover the truth behind the mysterious outbreak before it spreads beyond control.

The closer they work together, the harder it becomes to ignore the chemistry simmering beneath every sarcastic remark, reluctant truce, and stolen glance.

After all...

Falling in love with your greatest enemy may prove even more dangerous than trying to kill them.

Filled with unforgettable banter, richly imagined world-building, magical intrigue, and breathtaking romantic tension, The Irresistible Urge to Fall for Your Enemy is a must-read for fans of addictive slow-burn romantasy.

The Irresistible Urge to Fall for Your Enemy – Dearly Beloathed Duology Book 1

Perfect for fans of Emily Wilde's Encyclopaedia of Faeries, Divine Rivals, Assistant to the Villain, One Dark Window, Fourth Wing, and A Court of Thorns and Roses, this romantasy features enemies to lovers, forced proximity, assassin and healer, slow-burn romance, magical disease, forbidden love, witty banter, and political intrigue.

Product Details

Title: The Irresistible Urge to Fall for Your Enemy

Author: Brigitte Knightley

Format: Hardcover

Series: Dearly Beloathed Duology

Book: 1

Can Be Read As: No – Best Read in Series Order

Genre:

• Romantasy
• Fantasy Romance
• Epic Fantasy
• New Adult Fantasy
• Romantic Fantasy

Pages: 384

Dimensions: 1.26 x 9.13 x 6.06 inches

Illustrated: Yes

Publication Date: July 8, 2025

Features:

• Book 1 in the Dearly Beloathed Duology
• Instant New York Times Bestseller
• Enemies-to-lovers romance
• Slow-burn romantasy
• Assassin and healer
• Forced proximity
• Forbidden romance
• Magical mystery
• Political intrigue
• Foil hardcover edition with decorative endpapers and interior map

Author Biography

Brigitte Knightley is the bestselling author of the Dearly Beloathed Duology. Known for crafting witty, slow-burn enemies-to-lovers romances filled with unforgettable banter and emotional tension, she writes the kinds of fantasy stories she loves to read. The Irresistible Urge to Fall for Your Enemy is her debut novel and an instant New York Times bestseller, earning praise from romantasy readers for its compelling characters, rich world-building, and irresistible chemistry.