Unchained by J. Lynn

Between the pissed off creatures that want demon-hunter Lily Marks dead and the fallen angel who just...wants her, Lily is about ready to trade forever for a comfy job in a cubicle farm.

The fact that she and Julian are civil to one another is enough to have her thrown out of the Sanctuary, but she can't shake her not-so-angelic stalker or how he brings her dangerously close to ecstasy.

Her forbidden relationship with Julian provides the perfect fuel for suspicion when a traitor is discovered to be working within the Sanctuary. Lily quickly finds herself hunted by well, everyone.

Her only hope is to discover the real traitor before she loses everything—and she'll need Julian's help. That is, if Julian is really there to help her...and not destroy her.
Yeah, being a Nephilim isn't everything it's cracked up to be.