ROMANCE THAT PACKS A PUNCH
Where every punch lands hard, and every love story hits harder.
From steamy one-night-stand strangers to forbidden coach x athlete slow burns, Nikki Castle writes the kind of stories you’ll lose sleep over.
Shop the books. Meet your next book boyfriend. And stay for the romance.
Meet Nikki Castle
She writes spicy fighter romances by day… and trains real ones by night.
Based in Philly, Nikki Castle is a full-time romance author, MMA gym co-owner, and certified dog mom. Her books? All heat, heart, and emotional gut punches.
She’s been storytelling since her teen years - but in 2020, she finally sat down and wrote the book that changed everything.
Want to know the rest of the story?
An injury ended his career. She might revive his heart...
Roman had it all, until an injury shattered his MMA dreams. Now, he’s facing the fight of his life: rebuilding his future with the help of the one woman he can’t have.
She’s his physical therapist. He’s her toughest case. What starts as tough love turns into something neither of them expected - something forbidden, something worth risking everything for.
WHAT READERS ARE SAYING:
"This book was everything I wanted and more—a gripping, emotionally raw, and beautifully written love story that I couldn’t put down."
Why Readers Obsess Over Nikki Castle Books
They're so much more than just spicy sports romances. These are stories that hit.
The ones that leave you breathless from the spice and the feelings. The ones with tough heroines, emotionally wrecked heroes, and the kind of tension that makes you scream at your Kindle.
Every book is a fight for love, and Nikki doesn’t pull her punches. She writes for readers who want more:
✔ Fighters who fall hard, and love harder
✔ Spice levels that make you break a sweat
✔ Scenes that live rent-free in your head
"This story packed SO MUCH into a small, 100 page package. I loved the pacing of it and how Damien and Annie matched each other so very perfectly. I have nothing bad to say about this novella other than I wish it was longer so we could get more of them. Overall LOVED THIS and if you are looking for something quick to read in an afternoon, look no further!!"
"There’s nothing better than a well-written enemies-to-lovers story where the sexual tension just drips from the page. Throw in the physical and mental strength of MMA fighting, reluctant roommates, and a love-hate that has been brewing for years and you get the explosive heat that is Tristan & Remy."
"This book isn’t just a sports romance—it’s about healing, finding purpose, and letting someone in when you least expect it. If you love grumpy/sunshine dynamics, aching slow burns, and characters who fight for their second chance, Revive Me will absolutely own you."
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