I have this crush since I was 8 now I am 20 and almost a decade have happened. I can't wait longer. Someone please tell me a way to tell her without getting uncomfortable.
Anyone is flattered that other people find them attractive. If they say otherwise it's a lie.
Take it slow.
If you are friends on FB, maybe comment...
"beautiful as ever" to a recent selfie on her page. (do this only once, more is uncomfortable, especially publicly)
I will do the comment thing ...
"beautiful as ever" seems innocent enough to the casual observer, but it says more to her on a number of levels.
"as ever" reveals that this is not something new, or fleeting, it's more concrete, and timeless, implying or revealing a history...
boldly declared for all to see, demonstrates confidence (which you may need to improve, but the potential reward should motivate you in that regard)