What I have to do to realise i love you very much?

I love a girl Mayuri but she can't understand my feelings at all.sometime i think that she love me from his behavior but she says that she can't love me. I love her very much more than romeo and Juliet. So please give me advise me what i have to do? with out her i feel like a lonelyness if she cant realise my feelings then i will not married to anyone till death.