You make it very clear now that that you need some immediate help. It is pointless to do anything about a relationship until you are healthy and strong again. A relationship founded on pity and fear will never last anyway...Don't delay.

If you don't mind telling, is it a Muslim/Christian situation? Interfaith relationships are extremely interesting to me (I'm in one myself) and perhaps it would help you to provide more details...however, if you think this nosy of me, I won't be offended.