Not exactly an expert on pure erotica, but I’ve noticed some authors who write thrillers with strong romantic elements and very, very high steam. For me, it’s less about the ‘erotica’ label and more about finding the suspense keeps me turning pages just as fast as the chemistry. Authors like J.T. Geissinger come to mind—she writes these dark, obsessive romances wrapped in genuinely tense, twisty plots. 'Beautifully Cruel' is a great entry point, it’s got that mafia edge but the relationship power struggles are the real thriller.
I'd also mention Penelope Douglas, though she’s often shelved as dark romance. Her 'Devil's Night' series blends revenge plots, secrets, and seriously intense intimate scenes. The thriller aspect sometimes takes a backseat to the character drama, but the overall vibe is definitely a romantic suspense with the heat dial turned way up. There’s also K.A. Tucker, who writes more ‘suspense with romance’, like in ‘The Simple Wild’, but her later books ‘Keep Her Safe’ or ‘Burying Water’ have stronger thriller bones and satisfying romantic payoffs.