Answer
At the outset, we wish to inform you that it is prohibited to have any contact with a stranger (Ghayr Mahram) of the opposite sex.
Marriage is a huge step in one’s life. The implications of not following correct procedures may have disastrous and lasting effects. It is our humble opinion you communicate your intention to your parents or someone influential who may convince them. Should they still refuse, and you have the fear of committing sin and you cannot exercise restraint, according to Shari?ah, you may marry the person without the consent of your parents.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai