I am 21 and me and my boyf have been together 4 years and because of religion we won't be accepted???HELP?

Me and my boyf are such a happy couple, we love each other, and we care for each other. I could not imagine life without him as he has changed me as a person for the better. I don't want to lose him although I will if I don't tell my family who will porbably disown me and kick me out. He doesn't want this to happen to me so says maybe we should break up to save you the heartache but I don't agree. I have liked him for 10 years! My dad is an amazing person but with this I think it will push him to far... I don't want to lose my family but I am happier with him most days. He is my everything. I am a weak person and I think whichever way this goes, I will crack and become ill to my anxiety or worse depression, what do I do? I need help, this has been my battle for years, I don't want to give up on us!