In fact, Lex told Lois that he had a child but that the boy and his mother were killed in an accident.
??
Do you remember when that was? For some reason I don't recollect it at all. What am I forgetting? I thought that during Luthor's will reading Lois said that Lex had told her she was his first true love. Though I guess that leaves room for a child resulting from a fling with some woman that Lex didn't really love.
