I understand your situation better now; thanks.
I suspect that some part of your dating this boy is in rebellion to your parents, and is part of you trying to grow up and out from under their wings. Finding a way to honor the culture that you accept in a way that both you and your parents accept takes much time and struggle, and I think you're right in the middle of that right now. This is a natural part of all young people growing up: your situation is more pronounced because the lines are so clearly drawn in class structure.
I bet your parents actually understand what you're going through because they were young once as well. They're scared that you're going to do something to hurt yourself in the long run, and don't want that for you. But in the end, you are going to have to live your life. Every generation in every country faces this issue...it just gets acted out in different forms. Understanding your need to rebel and become your own woman will help you sort this out.
My advice is to take things slow with your parents and your boyfriend. Don't add fuel to the fire. In the end, they can't control who you care about, but you can benefit from their wisdom. Try to find a balance between the two. You will always have the final say as an adult. Slow things down and don't get into absolutes. Tell them that you'll consider their advice very seriously, but that the final answer will be yours.
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