I think Im losing my best friend who I am In love with.?

I met my best friend in first grade and me and her always got along so well that out families got together like one big one. As adults she started to distance herself from me. When we were in Junior high and high school she gladly accepted my dance proposals. Nowadays she is to emberrased to even dance especially in front of her friends and her friends dont really like me to much. I was blessed with high intellect and they on the other hand are still in community college taking algebra, could be a reason why they hate me so much. Anyways she is always saying that we are best friends and siblings and she flirst with me when we are alone but in front of other people she is emotionless towards me. What can i do to get her back.