Feeling Lost and in Pain: How Can I Find a Way Out?

Iam 27 years old .me and my boyfriend were in relationship from the last 5 years.he is my childhood class met.during corona time we reconnected through social media .we are from same place .initially we both were good friends later we decided to start our relationship.i belong to low caste.and he belongs to upper caste.in those 5 years we shared our happiness, sorrows together .he was with me in every situation.he helped me emotionally mentally and financially.every thing went well .we planned out future together.later our parents got to know about our relationship.i convinced my parents.but his parents are not accepting our love because of my low caste..i even took my father and brother along with me to talk with his mother . I even begged his mother by touching her feet to accept our love.she told me that she wants to do his sons marriage with a girl who belong to their caste. His parents are telling him that they will leave the home town and go somewhere else if he marries me.my boyfriend is telling me that his parents especially his mothers health will be effected if he marry me and asking me to move on..I asked me that whether he is ok to marry the girls of their parents choice..he told me that he doesn't have any option other than listing to his parents..I'm totally devasted .I'm suffering with anxiety, depression and continuous thoughts ..i want him.he also loves me but he is not daring to marry mee.he is worrying about his parents..how to deal with this situation..pls help mee