I don't want him to meet my parents
Are you scared because they might not like like them?
Yes, they will entirely disapprove of this relationship
It may be a good idea to protect the feelings of your partner from toxic family, however there will come a time when you need to introduce your partner to your parents regardless. It is up to you to pick the time you deem as fit. If you worry about your parents reaction, easing them into it may be a better option.
I will never introduce my parents to anyone. I'm doing as I please.
OK that is your choice, but they might become suspicious if you never introduce them. I think if you sit her down and tell her the situation she can decide with you what to do as a couple.