How do I handle this?

How do I find relief when my bf of 2.5yrs is probably going to marry someone else? Its the entire Indian arrange marriage set up. His parents are adamant about us not getting married... Because are different type of brahmin or something even though we are of the same caste. He belong to a very interior part UP. He says he cant do anything. I am in alot of pain. There is also financial strain his family is going through which can be resolved with the entire arrange marriage set up. what should I do??