Demon Blood (The Guardians #6)

Long before she was transformed into a Guardian and trained to fight demons, Rosalia knew darkness all too well. Raised by a demon, Rosalia learned to guard her heart -- and her soul -- until she found a man worthy of her love. Once, she thought that man would be the powerful vampire, Deacon…until he betrayed the Guardians.

After losing everything to the lies of a demon, Deacon lives only for revenge -- and is taken aback when Rosalia offers to help. A vampire who has nothing -- who is nothing -- isn’t worthy of her attention. But Rosalia wants to do more than just look, and the explosive need between them can’t be held in check. And when Deacon’s vengeful quest creates a dangerous alliance of their enemies, she will be his only hope… Rated '4/5 - Explicit open door' for steam/spice/heat level.