Keep dating them until the parents really, truly do not like you. (Do not shove your relationship in their face......)
if you love your boyfriend and he loves you, then ignore the parents for now; be gracious and polite, but don't force kindness on them; some parents feel that nobody is good enough for their child. In the end, its up to your boyfriend to make his parents know that you come first in his life and if they don't accept you, they will risk losing him.
you're welcome; I hope all sorts itself out for you, but in any event, best wishes always.
Leave him before it gets any worse for you.
Have a game of tiddlywinks