My boyfriend wants me to spend more time with his family?

the problem is that i have unresolved problems in my own family. I was raised by my aunt and uncle with out neither of my parents really being a major part of my life. I have a lot of insecurities as i was abused verbally when i was being raised by my extended family. I have a serious issue of trust because i don't want anyone hurting me as i have been hurt before by my own family. I am just trying to protect myself. My boyfriend doesn't understand me i have tried explaining to him several times but he just gets frustrated and angry. He is a family person and can't see why i don't like being around his family. At several occasions i was invited to social gatherings with them. It has never been a pleasurable experience. I suffer from social anxiety and depression. My boyfriend and I have known each other for over ten years now we are going to get married this month and we have a son. I really do love him and want to be with him for the rest of my life but his family makes me feel uncomfortable and i feel as if they are a real threat to our relationship. His step aunt treats me poorly and doesn't even tells me good morning or greets me when she sees me on the street. she is always at his step mom house and i really dislike the way she reacts to me and wish to avoid her entirely. Also his parents feel as if we must always do as they say. I do respect them but i am an adult so is my fiance and we are capable of making responsible decisions and i feel as if they should respect that. Everything i do gets judged by my fiances family. And i don't wish to be judged for everything i do. They want me to be a part of their family and i have let them into my life i feel as if hey should respect me for the person that I am and not try to change me. I don't want to have to pretend to be someone else when i go around them. Often when i am around them i remain quite and antisocial because i am afraid to be myself because i don't want them judging me. I am naturally an antisocial but if one takes the time to know me and respect me i would open up to them. i also feel if i respect them they should respect me as well. Please help what should i do i want to be able to go around his family and feel comfortable and i really don't want this to be a hindrance in our relationship. I am willing to do what i have to to make sure our marriage will be a success!