Hello, Since you want him as before you need to look for ways to help him..Most important step is to talk to him patiently whether it's only your short temper that is troubling him or any other stressor present...try to improve your communication  style if it's bothering him..try to be a listener sometime....Consult a Psychiatrist or Psychologist for detailed evaluation and help..Many times we need professional help for guidance..So go for it.. regards