Disgraced — Natasha Knight

Disgrace: the condition of one fallen from grace.
Damon
The first night... I rescued her from an attack in the seedy underground of New York City.
The second night... She told me the first of many lies.
She thinks she can keep me out of her world, but she's in over her head and needs a protector. Watching her, being near her, it gives breath to something dark inside me. Something primal and forbidden. Forbidden to me.
Because in six months, I'll be a priest.
And she complicates things.
She thinks she'll become my disgrace. Truth is, my fall had begun the moment I'd laid eyes on her.
Lina
He wasn't ever supposed to find me.
The first night... He came out of nowhere and saved my life.
The second night... He asked questions I can never answer. 
He knows I have secrets but he can't ever find out what I'm hiding. No one can. And as much as I want him, I know I can't ever have him. Not really. Damon isn't mine. Not to keep, anyway. 
And I can only afford to play for keeps.