God, that is really sad.....I'm sitting here stunned, I can't imagine how you feel. The only good thing I can think of to say is that at least you got to have a good talk with him before he died. I'll pray for you and your family bro.
I am sorry to hear about your loss. You and your family are in my prayers. I have a younger brother and think of him now as I write this. Dont blame yourself. He would want nothing more than your happiness.
Sorry for your loss Bro. My prayers are with you.
If I could offer you one piece of advice from personal experience,
Don't bottle your emotions. You may have to be strong for someone in your family, but make time for yourself to grieve as well.
man i also have a brother whom i share the same relationship.....i couldnt even imagine....i am proud that you were able to get up off your feet and share this with us. this teaches a a great lesson; and its to live each day its fullest.