I love my best friends lover?

He dose not know she loves him or me, Well ''NO'' one knows I love him or NO one knows she loves him I have not told my bffl that I love this guy and if I do she'll be crushed, He is also my twin brothers bffl, So what do I do I am also in love with a guy who I have history with but never gone out just kissed when we were 6 playing hide and seek both hid in bathroom LOL now I'm 11 please positive answers I am so stuck I have no one to talk to!