In Lust with the Enemy — Marcy Jacks

Rory Greenberg travels back in time to be with his brothers before it is too late. Unfortunately, he's sort of new to the whole time traveling thing, so he doesn't expect to land right in the middle of winter, or inside of a werewolf camp who immediately scent that he is a luna werewolf and capture him. Allan Edwards never had much regard for luna werewolves, but he's a prisoner in this pack as well, and one sniff of the other man lets him know that they are mated. Allan has no intention of leaving his mate behind. Escaping is easy, but surviving the snowstorm is hard, and the only thing Allan can do is trust Rory when he leads him to another pack, this one full of luna werewolves, and Allan has to convince them to not kill him before Rory can recover and explain their situation. Not an easy task considering he used to hunt their kind.