ANSWER:

The only way to make this relation halal, is to marry her. You both first need to cut all relationships and communications, repent, show remorse and ask Allan for forgiveness. If you can’t marry her, you must cut all communications and fast until you are able to marry her or anyone else. 

I’m 17 years old and i’m in relationship with a girl…..now the relationship is haram how can i make this relationship halal?? And how can i advice my parents regarding her??