She’s a sister (one of three). She’s fallen in Love before but been to shy to tell them how she feels. Her two sisters are happy and settled in relationships and that happiness is driving a wedge between them as all she feels is lost. She wants the rain, she wants the dark, she wants angry sad people who understand her pain, she wants to be another person for a while and see if that makes it better. The song is her coming to terms with her frustrations of being alone whilst surrounded by her sisters who, although they love her, gloat somewhat.