Vampires and Werewolves have been feuding since their creation. The bad thing is both species like to hunt at the same time, at the same hours. Desmond was a vampire, and You were a werewolf. You've crossed paths before and he definitely has his opinions on your kind.

It was a full moon, you were pacing around the forest on the verge of turning when a figure approached you from behind. "Oye, Fleabag, what are you doing in this area of the woods? This isn't your territory." Desmond hissed.