How would you characterize Jekyll's relationship to Hyde? Why does Jekyll seem to need to be Hyde?

Jekyll wanted to be both respected yet indulge in his depraved desires in the form of Mr. Hyde. Jekyll was tired living with his repressed Victorian morals and demeanor. Unfortunately as time passed, the two personas could not be separated. Jekyll begins to lose himself in Hyde: Jekyll's alter ego or dark side becomes too powerful and Jekyll must kill himself before he permanently becomes the deplorable Mr. Hyde.