Spike by Ariel Dawn

Life was easier as a dog…

Cursed to be a Hellhound for all eternity, the last thing Spike expects is to shift back into a human on the steps of the DeLux Cafe in front of everyone, including his owner, Hecate.
Now he needs to learn what it is to be human in today’s world, so he can pass for one himself and enjoy the offerings of humanity. Not to mention the fact he must find his mate before the next full moon or he will turn back into a Hellhound. After his life with overprotective godly guardians, going to college suddenly doesn’t seem so terrifying.
When Spike discovers his mate on campus—a fiery vampire, no less—he finds himself in the middle of a hellish fairytale. The question is, will Isabelle be his happy ever after? Or will Spike’s fate be sealed along with his human self for all eternity?

Spike is book thirty-one in the Speed Dating with the Denizens of the Underworld shared world, featuring a virginal hellhound turned human, a fiery vampire vixen, and more.