Blood of Angels by Amber Morgan

Thea Clayton knows her life isn’t normal. But even she wasn’t prepared for an angel to fall through her roof.
Turiel gave up his place in Heaven to experience true sensations for the first time in his immortal life. He didn’t realize that meant pain as well as pleasure.

Thea isn’t the only person who knows Turiel has fallen. The blood of angels is a precious thing. And some people will do anything to steal it.