another sinking ship

m 19 guys I need a suggestion.. I love a girl very much.. she also love me a lot.. 6 months ki relationship h. Ab problem ye k hum dono different cast se belong krte h… hum dono ki family ne hamari shadi k liye mana kr diya h.. us ki engage bhi ho gyi. she is just 17… Hume pata h hamari family nhi manegi.. or main use chorna nhi chahta.. main chahta hoon ya to kuch solution nikle.. ya WO ladki khud mujhe chor De. bcoz main use hurt nhi kr skta.. hope u all understand what I’m trying to say