Love problem, any help?

I am in a relationship for the past year with this girl .But things havnt been going that well. We have nothing in common. i think im in love with her. but we never meet! when ever i call, we have a awkward silence. She dosnt call me anymore. she dosnt even try to make it work. Its, its just no the same anymore. Now, there is my best friend, me and her are.. i dont know! we do everythig together. we do evrything that a boyfriend and girlfriend are supposed to, we flirt with each other, we kissed once(it just happnd). we are made for each other. but for some reason, we are not going out. and her boyfriend, is one of my very good friends. but things are not going well with them too. now i dont know what to doo?? should i break up with my GF and ask my best friend out? or should i just hope that my gf has a sudden enlightenment of how much i miss her. and if i ask my friend out, that could ruin our current relationship and i wud lose a good friend. help?? :(