Advice for moving out

I want to move into a small apartment with my boyfriend. I am 19 years old. 
Recently my family got kicked out of our home so we are living with friends so it's definitely complicated. My parents are super religious so I know that they will not support me moving in with someone so young but I really do believe my boyfriend and I will be together a long time. How do I tell my parents I'm ready to grow up.. they treat me as if I'm 13. I just started being able to have freedom. Am I pushing it??