Ok, so you know she has no feelings for you beyond friendship but you're still hanging around with her... Deep down somewhere you're thinking, feeling, that it'll all work out in the end if you just stick with it and show her through demonstrating your undying loyalty how much you truely love her.
And of course deep down somewhere you know she does truely love you too and just needs time to realise it. She's just looking for something from you to prove how you feel, she's too scared at the moment or just too shy to show it.