My friend is obsessed with my bestfriend.?

well ive been friends with this girl (emilie) since last year of school and everytime someone ditches her she always comes to me. ive talked to her so many times about it but she denies it and we always fight. i really want to be her friend. but i find shes fake sometimes :/ now i have a gorgeous bestfriend and emilie always wants to be with her, she stopped talking to me, and emilie's always copying her always writing on her status on facebook ''i love my bffl ----'' sometimes i wanna say something like ''you guys hardly even talk'' cos its really annoying. she always thinks about her first, on her facebook her so called 'bffl' is number one on everything, shes obsessed. and i told my bestfriend that and then she says ''thats why i love her'' shes a creep with her. and i asked if we can hang out me and my bestfriend and she always says yes and we never end up hanging out its as if im not important enough. but then when emilie (of course) wants to hang out with her well my bestfriend finds a way to hang out with her. i dont understand they practically just started hanging out. and now its on their msn nick and it pisses me off. its annoying to know that shes obsessed with my bestfriend (cos weve known eachother for a while) and that they act all bffl. im mad and jealous.