Picked it up for the "Ancient Magus Bride but they fuck" vibes, stayed for...Well, not sure, but it was a quick listen at least.
It sounds incredibly romantic to have been won in a gamble, right? And to have been watched all your life by unseen fae forces? Ehh.
This had shades of dark romance blended with a monster romance, not in a way I enjoyed. Overbearing, with anger issues and a staunch refusal to respect boundaries is probably the nicest way I'd explain Louis. There's a soulmate trope used, and he proceeds to control everything about Antonia, from clothes to literally breaking down a door when she wants to be alone.
Antonia was a promising character who sadly was weakened immensely by marriage, I guess. Her propensity for mathematics and estate accounting never comes up again; once married, she just wanders around. She's supposed to be smart and capable, but was baffled at symptoms of pregnancy, apparently unable to put two and two together. The third act conflict was absolutely ridiculous.
The writing itself was ehh, terms like "turned on" jarring in a regency romance, even if fantasy. Improper grammar and words made its way even into the audio narration several times. Several terms were overused, especially a distinctive fae term of endearment.
CW for pregnancy, and a lot of controlling behavior and violent rage resulting in property damage.
Best part was the cover, and Louis' anatomy.