I feel a little out of place commenting on this since nobody here really knows me that well, but I guess it doesn't hurt to add one more to the list of condolences, even if it does come from a stranger.
Like the others here, I too know what it's like to lose those you love and I'm sorry to hear about your friend. I'm sure that's not much consolation right now and I'm sorry that I can't offer you more comfort but perhaps you can find some in the knowledge that it will get easier with time. It never completely goes away (at least it hasn't in my case) but these things have a way of gradually easing over time.
So hang in there, brennakimi. And for what it's worth, all my best wishes.