Her heart was too pure, too beautiful, and I knew that in the process of trying to tame me, she would succumb to the darkness instead and that's exactly what happened.
I tainted her, I broke her, I ruined her beyond repair and in the end, she didn't become the beast tamer, just as I had predicted. Instead, she soaked up my dark traits and became part-beast herself.
And I knew all along that I—this beast—never was human, I was always the monster everyone perceived. Therefore, there was never a man within the beast whom she could tame and bring back. There was no man to bring back because a man, who would have a moral compass, never existed in the first place. There was the beast and only the beast that ever existed within me.
Therefore, the plan was simple. I wanted her to emotionally detach herself from me. I wanted to make sure that once the outside threats were taken care of, I'd send her back and she wouldn't want anything to do with me.