There is something evil inside him

Celestia's POV:

In front of my eyes, the palace Fae guards escorted Darius out of Father Oberon's chamber. But I wasn't able to do anything about it! I pleaded with my father to change his mind—but he refused to listen to me. 

Once Darius and the guards were gone, my father focused his attention on me. "My child, I want to ask you something, and I need an honest answer from your side."

"What is it, father?" I asked grimly—as I was still upset by the way Darius was taken out of the chamber like a prisoner. 

"Are you falling for that half-mage?"

"No! Not at all," I shouted. "I just wrongly assumed him to be—you know who…."

"Celestia, if you are not falling for him, then why did you say that you are getting strange vibes from him?"

I didn't know the reason for that either! How could I give him an answer on this? I wrecked my mind hard to come up with an explanation.