Living Separately for 5 years with kid, in 9 years of marriage

Living Separately for 5 years with kid, in 9 years of marriage. Kid is 8 years and I am completely talking care of my kid with no financial support from my husband. He tortured me mentally with his doubt mentality, I kept quite even though I came to know about his affair/interest in other women (found saved chats in gmail) thinking about Kids future, still he and his parents abused me and my parents very badly. He always has a doubt mentality and used to torture me saying I am going out to see other men. he asked me to leave my job at time of marriage for same reason which I realized very late. I was not able to bare his torture and got separated in 4th year of marriage when my kid is 3 years and staying with my parents. I got back to work searching for a job, I am completely taking care for me and my child studies. they dint give neither mine nor my kids belongings till date. He has a psychic mentality which I cannot take any more and want to get divorced. we dint even met once in this 5 years nor he turned up to see kid , please advice how can I get rid of him.