Are you kidding? Are you not serious about your own life? I feel that you have acted crazily and immaturely. Why you stayed separately even after registering your marriage? If it was to stay separately why you married at all? Ok gone is gone.Now how to mend the situation. It is urgent also.
It is quite wrong that you did not disclose your marriage to your parents. That is why it has led to this very difficult situation.
Do not waste time. Disclose honestly all that has happened. You have registered your marriage. That means there is a legal angle to the whole matter.
Fall at the feet of your parents, beg pardon for not disclosing on time and request their help. After all, they are parents and their only aim is welfare of their children They may fret, fume, threat even of suicide. But be very calm. Tell them that you still love and respect them. Convince them patiently.
Sometimes the matter may become solved more easily and smoothly than you fear.
But, before that consult your spouse. What is the situation in his side parents?
Please just know that you do not have any immediate alternative than sticking on to the registered marriage, and for a new marriage you have to undergo the long process of divorce. I hope all that things may not reach that extent.
For any problem there is a suitable solution. Your problem also has its smooth solution. If you are afraid to met your parents alone, take some elders whom you have confidence and who have some influence on your parents.
Do not waste time, approach everything by remaining patient , calm, polite, decent and confident. Ensure that your spouse loves you truly and sincerely and he is also capable to handle the situation and take care of you.(as you are married why you call boy friend?)Go ahead. Best wishes.