[ This is what he was hoping to avoid but it was inevitable. And he wants to lie, which is unusual for Jack, he prefers to tell the truth unless it's something shameful, and in this case it obviously is. Jack looks down, his fingers tangling together as he worries, the hesitation obvious. He can't lie to Castiel. ]

No, I'm ....

[ Jack wishes it was Gabriel. Gabriel sounded like an okay archangel, better than Michael and Lucifer, although that's a low bar. He would have been proud to be his son in comparison. A trickster is not a villain, not really. ]

Lucifer is my father. My mother ran from him and you helped hide us so I could be raised away from him.

[ It isn't as simple as Jack always hating Lucifer though, that would be less shameful. For a little while there, he considered running away with him, unable to cope with being so different from the others. But now he knows. It's why he hurries to add in quick verbal pleas. ]

But I'm nothing like him, I swear it, I ... may have some of his abilities but it doesn't make me like him. You three taught me how to be good.