This dream may reflect feelings of insecurity and jealousy in your waking life. The guy you have been talking to represents a potential romantic interest or a close friend. The beautiful woman getting married could symbolize a new and exciting opportunity or relationship that you fear may take the person’s attention away from you. Your negative reaction towards her and calling her a whore may indicate feelings of inadequacy or fear of being replaced. The fact that she turns into a zombie could represent your fear of this new person or situation becoming destructive or harmful to you. Your sister killing the zombie bride could symbolize your inner strength and ability to overcome these negative emotions. This dream may be a reflection of your subconscious fears and insecurities, and it may be a sign to address and work through these feelings in your waking life.