my bff and the boy we like?????

I have this "best friend" she has been my "BFF" since forever but we have grown apart and it seems like that im the only on who see's this i mean we both have different friends she doesnt like mine and i dont really like hers (although i'll never tell her that). But thats not the problem the thing is that we both like the same kid since grade school. The thing is i never told her i did so she doesnt know. Well anyway she keeps comming up to me and talking about her stupid problems with this kid and is like im jus trying to get him out of my life so dont have to feel guilty about having a crush on him but shes all like he did this and that and omg he wont talk to me. I really want to tell her i dont care but i cant cuz i dont want to be a bad friend but these past years have been driving me crazy! She goes on and on about him I REALLY DONT CARE!!!!!! So how do i tell her?

next time she talks about it say I DON'T REALLY CARE!!!!!!!
got it ?

im sure she can under stand one can not help there feelings i exepted that my girl after 8 years feel in love with my best mate i still talk to the both of them im they are a true friend they will understand if not there not worth it