Priest by E.M. Lindsey

There’s a fine line between lust and love…

Feeding on the pleasure of other creatures might sound like the perfect life, but Priest knows the truth. The bottomless hunger and the never-ending need for more will eventually drive him to the brink of madness.
It’s the fate of all Incubi.
But until then, he’s determined to spend as much time as possible checking on the human bookstore owner who turns Priest into a tongue-tied mess. Oliver doesn’t seem to mind, treating him with a kindness he’s never experienced from anyone outside his Trident Agency family.
Fumbling flirtations is all it can ever be though. The risk of draining Oliver is too great, and Priest refuses to put him at risk.
But then the bookstore goes up in flames, and Priest learns he’ll do just about anything to keep Oliver safe.
Protecting the reckless human he has been obsessed with for months may be the only truly good thing he does with his life. But the longer they’re together, the more difficult it is to resist his demon’s cravings, and the more secrets they uncover. About Oliver… and supernaturals like Priest and his friends.
As the Alpha Team investigates and attacks keep coming—forming a terrifyingly familiar picture—Priest and Oliver have to learn to trust each other… and themselves.