Tainted Obsession

She's engaged to a DEA agent, but the mafia boss is obsessed with her...
I'm supposed to kill the corrupt DEA agent, but I'm distracted by his innocent fiancée.
When I'm watching him, I find my attention drawn to her instead.
His corruption puts her in danger, and I have no choice: I take her for myself, for her own protection.
Once I have her under my control, my fascination deepens to obsession.
She's the only light in my dark criminal underworld, and I'm utterly addicted to her.
If her abusive fiancé ever dares to come back for her, he'll learn just how vicious I can be when I protect what's mine.
This is a standalone mafia romance novel and features an obsessed, morally grey MMC, a sweet, innocent FMC, touch her and die, forced proximity, and hurt/comfort vibes!