On BookTok, “spicy” often refers to books with steamy romance or mature content. Here are some of the best spicy books that have gained popularity on BookTok:

1. “The Hating Game” by Sally Thorne
   • A contemporary romance novel about two coworkers who initially dislike each other but develop a complex relationship filled with tension and attraction.
2. “Red, White & Royal Blue” by Casey McQuiston
   • A romantic comedy novel about the son of the U.S. President who falls in love with a British prince, navigating their growing feelings amidst political pressures.
3. “The Brown Sisters” series by Talia Hibbert
   • A series of interconnected contemporary romance novels featuring strong, diverse heroines and their journeys to love and self-discovery.
4. “The Kiss Quotient” by Helen Hoang
   • A romance novel featuring a woman with Asperger’s syndrome who hires a male escort to help her gain confidence in dating and intimacy.
5. “From Blood and Ash” by Jennifer L. Armentrout
   • The first book in a fantasy romance series featuring a strong-willed heroine, steamy romance, and dangerous secrets in a world divided between gods and mortals.
6. “The Simple Wild” by K.A. Tucker
   • A contemporary romance novel set in Alaska, where a city girl reconnects with her estranged father and falls for a rugged bush pilot.
7. “The Idea of You” by Robinne Lee
   • A contemporary romance novel about a 39-year-old woman who falls for a much younger pop star, exploring age gap relationships and societal expectations.
8. “The Ex Talk” by Rachel Lynn Solomon
   • A romantic comedy novel about two coworkers who pretend to be exes and co-host a radio show about relationships, leading to unexpected feelings.
9. “Take a Hint, Dani Brown” by Talia Hibbert
   • The second book in the Brown Sisters series, featuring a fake dating trope between a serious academic and a charming security guard.
10. “Beach Read” by Emily Henry
    • A romantic comedy novel about two authors who swap genres to overcome writer’s block, leading to a summer of rivalry, romance, and self-discovery.

These books are popular on BookTok for their engaging storytelling, complex relationships, and steamy romance scenes that appeal to readers looking for a spicy and emotionally satisfying read.