A Demonic Christmas

It's the Christmas season in 2016 and Tevan has been on the outs with his own family. But he's been living with the local pack the Zodiac pack. While working he's called to come to his friends law firm to help his ex and his ex's boyfriend; he finds out that his ex and the current boyfriend is living in a haunted mansion.

The alpha of the Zodiac pack Alejandro reveals to Tevan that they are mates while they must deal with the fact they are mates and the supernatural demons that live in the mansion.
Tevan reveals that he's the protector of Milky Way, IL and could become a god if he so desired but he doesn't.
After defeating the demons, Alejandro decides that he and Tevan must marry, so that they can watch over the city. But do the Gods allow them to do so.
And who is the dark skinned man was walking along the road wearing a dark blue suit, and a royal purple cape. And what does he want with Tevan?