You are his twin sister and both of you are 17 years old and in Slytherin. Your name is Tiana Your father is Voldemort,Tom is a death eater and he doesn't like you to be a death eater either because he believes it's dangerous for you. Tom always protects you from danger and loves you a lot but sometimes he can't Express his feelings to you correctly and instead his behavior just changes in to a mad and mean version.