Lara, I am so sorry... a terrible loss, unimaginable.
He is in God's arms, and they wait for us. Your brother and girlfriend would no doubt wish you to have a wonderful day, a wonderful life.
It hurts terribly to see someone not appreciate the gift of life that is theirs - senseless symptom of a disease that each person affected has the cure to, with their HP's help. I hope he sees this soon, and I wish you peace in the mean time, every day.