I have a big problem with my best friend?

we have been fr for soooooooooooo many years but now we have a prob...........we have a best fr and ive been in love with him 4some years .........and now she is gelous because he hug me kiss me we make sooo fun and she doesnt like this............i think that she like himmmm toooooooo ! but idk what to doo i cant be away from himmm i neeeeeeed him soo much (even if i never told him i like him -.- because im a girl i cant make the first step :( but i think she like him toooooooooooo what should i dooo .... should i go away from him ? plssssss helppppppppppp meeee