The Infernari Series by Laura Thalassa, Dan Rix

Hot-blooded, prideful, feral, Lana Malesuis is a demon. She has sworn an oath to heal her war-torn, dying species. Her method: drain human blood, use it to fuel her dark magic, reap human misfortune. She has come to the town of White Sulfur Springs to cull. Cold-blooded, ruthless, conniving, Jame Asher is a human. He has sworn to avenge his wife and baby girl, killed by demon magic. His plan: destroy demons’ portals, deprive them of their human blood supply, exterminate them one by one... moreHot-blooded, prideful, feral, Lana Malesuis is a demon. She has sworn an oath to heal her war-torn, dying species. Her method: drain human blood, use it to fuel her dark magic, reap human misfortune. She has come to the town of White Sulfur Springs to cull. Cold-blooded, ruthless, conniving, Jame Asher is a human. He has sworn to avenge his wife and baby girl, killed by demon magic. His plan: destroy demons’ portals, deprive them of their human blood supply, exterminate them one by one. He has come to White Sulfur Springs to kill. But when they meet, and he takes Lana as his prisoner, the last thing he expects to see in her wild violet eyes is the frightened innocence of a young girl. For her part, Lana never expects to feel anything but hate for the most feared demon hunter on Earth. Neither of them expected it to become something more. less