If your parents told you that you couldn't be with the guy you loved, would you stick with him anyway?

I have been on & off with a guy for almost three years now. We started dating my senior year of high school & have been through quite a bit. My parents do not like him at all & told me I couldn't be with him. At one point in this relationship I saw him behind their backs & when they found out they threatened to kick me out of the house but did not do so. (I still love at home.) I love this guy very much & I do not want to lose him but I also do not want to lose my parents. I am 20 years old & I believe I need to make my own decisions.