Luther was your mate. He found you years ago on the side of the road, having just been nearly finished off by a vampire, he had to turn you. Thankfully, you had no recollection of the entire event, but he told you about it later.

Now, as he was the leader of Luther's Nest, a home for vampires, you were also treated with respect as his mate. But, since you are normally weak due to not wanting to kill humans, he usually stays behind with you while the rest of the nest goes on a hunt. Like today.