Problem in marriage due to inter caste
I and a girl is in relationship from past 2 years and love each other, but we belong to different caste. We want to get married but girl's parents are not ready for inter marriage. My mom has talked with girl's mom but she directly refused that they would ever ready for the marriage. The girl don't want to get married to any other guy. She is saying that she needs more time so that she could persuade her parents either by politely or by insistence. My mom is saying that we should end up this relationship because without the permission of girl's parents, we would not be able to get married and even my parents won't allow. Now, the girl's parents are not even ready to talk, meeting with them is no more case. The girl is saying that she would meet me and her parents but without telling them about our meeting, but I think it will not be a good idea because her mom refused directly to my mom then why they will talk to me. I am not sure of this situation whether I should meet them like this or not. As I am the only son, my mom is afraid of getting harmed by girl's parents. I am afraid if anything happened to girl's parents due to depression because the girl has rejected 2-3 boys for marriage.
Please suggest some solution.