I like my best friend and she fell for someone else right after i told her how i felt. Where still friends.?

ok well first of all my best friend is a girl and im a guy. I'm 15 and yes i did like ehrto allot, way more then high school. She ended up likeing someone else right after i told her how i felt and is now with him. She is 15 and he is 14. I know i should be over her but the problem is i still have no reson not like her, i like everyhting about her from her deep sensative personality to her cute body to what makes her her. And no im not a perv but i have to admit shes aisen and rly rly cute... this happened 3 months ago and i still like her and shes on the brink of breaking up with the guy if he scrues up again. Should i keep it a secret like i have and not tell her i never got over her or keep quiet and just be there for her like i have. If she needs me i come runing down to her house ect. She trusts me compleatly. I told her i got over her but i still like her and i dont know if i should tell her that i NEVER got over her. Shes guna rbeak up with her boyfriend soon, do i tell her?