Search Results: has he fallen out of love

So, me and this girl have been friends for 4.5 years now. She calls me her best friend, But I have had a crash on her for the last 4 years and I think i might have fallen in love. But now, She is not the same as she was 4.5 years back, She has made some new guy friends and she seems to going away from me. When I ask her directly about it, She still insists that I am a very good friend. She talks to me very well and makes me believe that when I'm with her.
I am doubting her because whenever I ask her if i could meet her friends, she tries her best to convince me that i shouldn't meet them and she is spending a lot of time with them and she is keeping some secrets that i know. I haven't told her that I know these secrets. And she also tries to end a text conversation as fast as possible and I'm always the one who starts it.
And yes, She keeps mentioning that she thinks about me as her brother whenever I try to confess, forcing me to change my decision. I have tried twice and she has done this twice too. So confessing isn't an option, at least not for now. Please help.