He could go one of two ways, here, and whichever one he chose, he would forever wonder what would have happened had he made the other choice. He could either admit what Coffey already knew, or deny it. Denial could be fun. But admitting it seemed apt to get more information out of him. Hrm.
"Not," Lestat said, "in the strictest definition of the word, no." He put his hands up, in a gesture of 'I give up.' "Not for over two hundred years."