[natini]

Hi all
I'm 24 and ,he is also 24 v both are born and broad up in Malaysia .
I'm kongu velalar gounder and he is vanniar .he is running his own biz and I'm working as tutor .We are financially stable and v are really confident about our relationship...
His parents have no problem with the marriage.
But my parents are dead against this.
Reasons:
1)different caste,same age ((I expl them it is not so.. but they don't agree).
2) I have a younger sister.if I do this marriage,it will affect in her marriage as she will not get good alliance.
3)if I do this marriage ,it will be a encouragement for my subling,cousins and future generations in our family...
4)Also my parents are saying that our relatives will cut all relations with them if I get married to him.

Now I resign my job and just sitting at home for pass 7 months and my parents are not letting me to go out even for shopping or anything I'm really in depression and wants to go out from this situation...

My boyfriend met my dad and tried to convince him ,but he still sticks to these points and does not agree.
Kindly advise me how to convince... 10q