Otherworldly / F.T. Lukens.

Ellery doesn't believe in magic. Sure, they've been stuck in a five-year winter, but there's got to be a scientific explanation for that. They're more concerned with working hard to send money back to the family farm than with whether there's a goddess out there who could put a stop to it. Knox has been trapped in the human realm for years. In service to a powerful witch for a decade, Knox is finally freed when her crossroads deal meets its terms. But Knox isn't sure he wants to return to the Other World, especially since his queen seems to have abandoned him. When a chance encounter finds Ellery coming to Knox's rescue, they're suddenly face to face with a (annoyingly attractive) guy who claims to be a supernatural familiar - something they definitely don't believe. But Ellery needs a way to stop the endless winter and save his family farm, and Knox needs a human who can tether him to their realm.