Dreaming of an ex-girlfriend symbolizes unresolved emotions and unfinished business in past relationships. This dream may signify longing for connection, nostalgia, or the desire to revisit certain aspects of the past. It can also be a reflection of fears of rejection, betrayal, or feelings of inadequacy. Additionally, depending on the context of the dream, it could represent personal growth and the need to let go of past attachments in order to move forward and embrace new possibilities.