Surrender To A Devil by Wendy Vella

He does not believe himself capable of love.

Forrest Howarth did not have the capacity to love a woman. His daughter, yes, and the cousins who had welcomed him when he’d arrived from India, but a woman, no. Joining Alexius and using his knowledge to protect the Monarch was the next step he needed to take in his life. But before he does that, Forrest must find someone to educate his daughter. Miss Ruby Knight seems just that person.
The problem with having Ruby in his household is she intrigues him. She hides behind her clothes, and the need to ensure she sits well below him on society’s ladder. But she was up to something. He just hadn’t worked out what. No one has ever muddled his thoughts like his daughter’s tutor, so when he gives in to the inevitable and kisses her, he realizes there is no going back.
Too late, he realizes that his mission with Alexius and Ruby are connected, and he must use all his skills to keep her safe.