Should i leave my boyfriend????

I have this boyfriend of mine who is very rich, his father is a businessman. My father is an engineer and there is a lot of difference between mine and his families. Though his cousins and friends like me, but his parents and aunts and uncles say bad things about me, and say that they won't allow him to marry me. Though we are too young to marry at present, (both are seventeen and are Indians) but in the future if we decide to marry, his family will be a great hindrance. We love each other like anything, but we know that if we marry, his family will always keep haring me and taunting me for not being from business cl. It would be a lot painful if we are unable to marry in the future, but it's also not easy to break off now in the wake that how much we love each other. I don't know what to do. Should we break off now as his family won't accept me, or he should fight with his family for me? I can't understand what to do. Please help me!!!!