The Watchmaker's Lady (The Clockpunk Trilogy #1)
Heather Massey

The couple embarks on a lust-filled affair, one fueled by Matthew’s wild imagination. In order to provide Isabel with a brass body and pretty clothes, he begins a secret side business selling clockwork sex toys to his wealthy female customers.
Danger, however, threatens their idyllic romance when a disgruntled customer exposes Matthew’s forbidden business to the townspeople. Despite the growing menace, Matthew will stop at nothing in order to save his soul mate—and protect their love.