Kindly help me

If both of you are agree then you can solemnized your marriage under Special Marriage Act with duly one month notice period and there are any three witnesses needed,for details you may contact with a local Marriage Officer.

Sir, Thank you for your Kind reply. i have a small doubt can we get marriage in church without knowing anyone?? 

if u get marriage without informing her parents in church u may be in trouble bcoz they can make complaint in police for abduction. u have not mentioned you legal age n u have not described the plan after marriage in connection with her religion to follow. i think  a hindu girl can not get marriage in church as per hindu marriage act.

If she is 18 and you are 21 you have three options:

1.  Without changing any one's religion, you can marry under Special Marriage Act.

2.  Withough changing any one's religion, you can marry in the church, because church insistis that one of the couple shall be christian.

3. If you have no objection of conversion to Hindu religion, you both go for Arya Samaj Marriage and first you will be converted to Hindu religion and immediately , you both will be got married.