This is not LOVE. It has not yet begun and you are already suffering. Just see. There is so much unrest, anxiety and insecurity inside you.
Please do not name your desires, attraction as Love. Marketers just use this word Love to sell their products, their songs, their movies and so much lies. Love is a spiritual quality and comes from inside.
I could have suggested you some mantra, or some trick, or some remedy but all things will simply waste your time and money simply because Love is beyond these things if you really understand what Love is.
Love is a state of being, something that comes from inside and flows into all things equally. It always brings along with it peace and compassion. There is no future, there is no past, Love is only concerned with the present moment.
The kind of Love you are talking about dies as soon as one gets really bored of it and burdened with so much responsibilities and false beliefs. It is not a permanent thing, it has a beginning and a end. You are encouraged to experience it because its really fun but also try to understand its real nature.
Try to understand your own baseless neediness and attraction. There is no need to suffer if she cannot accept you. That’s her problem. She is rejecting a person who really cares for her otherwise who cares for anyone on Earth?
Finally, I would say if you really understand your situation’s real nature and understand that its just attraction and desire, and not a person specific thing we can discuss other obstacles blocking what you really deserve and bring some Love in your life. And this Love will be yours forever. A permanent thing.