"Draco- I- I'm- I- I'm not your mother." Narcissa admitted to a 18 year old Draco, whom was preparing to leave for his repeat of his 7th year at Hogwarts after the war.
"Is Lu-"
"Yes. He is still your father, but- while he was at school he- he fell in love with this girl- and- and well you know that Malfoys can only produce one heir, you. So w-when he married me-me I took y-ou in as m-my own- and- your mother-er left."
"Whose my mother then?" Draco asked
"Your Mother is.............
(Ooo the suspense. Youll never guess unless you read.)