Nikki Castle is a wife and dog mom from Philadelphia who writes spicy love stories about alpha MMA fighters and the women that melt their badass, playboy hearts. She's a full-time romance author during the day and spends her evenings running a Mixed Martial Arts (MMA) gym with her husband, who is also a retired fighter.

Nikki has been writing in one way or another since she was a teenager. She pursued an English and Philosophy degree in college, and finally decided to sit down and fulfill her longtime dream of writing a novel when quarantine began in 2020.