Should I leave my fiancé, who loves me and is attached to me, despite his family's rejection of me for social and financial reasons, or should I stay with him and put his family in a fait accompli?

The relationship between a young man and woman before marriage is not permissible. Marriage is a written provision. The girl must sever the relationship immediately and inform the young man that he is neither a [mahram] nor a husband. He should propose to her guardian if he is serious. This will increase the young man's respect for her and make him hold onto her if he is loving. The matter of the heart involves trusting that what has been decreed for her will not miss her, and that the young man will either propose formally or leave, which opens the door for other serious suitors. His marriage to her without the consent of his parents is valid, but he sins by disobeying them.