How to convince parents to marry with Restraunt owner

Hi friends,
I m 21 yrs old n frm kanpur ... doing b.com 2 nd year and my bf he lives in delhi he is 27 years and he is a business man ... We both love each other truly and wants to get married ..my father is against love marriage ... my bf name is rahul we are in relationship from past 1 year ... rahul is my bhabhi's cousin brother he talks to my bhabhi about our arrange marriage .. and my father did not accept his proposal because he did not like his business of south indian food restaurant ... i cant live without rahul pls help me guys pls give some suggestion i cant tell anyone about my love ...... :-(