The pain will numb with time. You'll never 'get over' your loss - if you did, it wasn't true friendship in the first place.Try to keep your memories of the good times without dwelling too much on them - and take comfort in the knowledge that, for your friend, this was for the best.
It's always difficult for those who are bereaved to be altruistic; it's even worse when people spend too much time sympathising about the 'loss', rather than celebrating the richness your friend brought into your life.
{{{{{HUG}}}}}
Pity it's only a virtual hug - you need the real thing right now...