Most Helpful Girl
You can't move on because she is your first love/you are in love with her.
A lot of people say that you never truly move on from your first love. The first love is the hardest to get over.
Despite everything, I will always love my ex.
You have two choices. You either accept that you cannot be together, for whatever reason that may be, and you just live knowing that she's your what if girl, or, you try and work things out with her. Find out how she feels. I always say to people follow your heart. Your head may talk logic, but your heart knows what makes you happy and what you want. Love is illogical.
I wish you the best. It's not a nice feeling. Good luck.