man i cant even imagine what that must feel like. i know that nothing i can say will make you feel better, but just know that i am extremely sorry for your loss and i, like others, get pretty emotional while reading stuff like this.
i have a few close friends that i spent all of my high school years with, and if i were to lose any of them, i would be devastated. it would be like cutting off my arm. something is just missing, and i hope one day you can at least find a way to get by and live through it. good luck and i really hope you guys make it through this ok.
oh, on a side note...one of my best friends called me and he was crying his head off (was weird because none of us have ever cried in front of each other) and i was like wtf? he couldnt even get it out, so i drove over to his house at like 100mph on a curvey backroad and his dad had been run over by a big tractor. that guy was amazingly generous, and against all odds. they were poor, didnt really have any house (it was thrown together in the middle of a nice town on the side of a hill...i frequently helped them add to it) and that made it that much worse. losing someone close is not foreign to me, but losing a really close friend (my age) is not something i have ever felt.