Sometimes its hard to live with parents, especially when its.. "If you live in our house, you live by our rules!" Only he knows what he wants. If they are that against you two being together then he needs to decide what he wants to do. He needs to sit down and talk to them, maybe try to come up with a compromise some how.
Try not to let this get you down to much, I know its hard.. But its really not worth destroying your world over. Your still young, you need to enjoy life for what it is. The older you get the more youll miss these days. Try not to make your past something that you regret.
Good luck.