Oh man, heartbreaking tale, so sorry for your loss, especially in the circumstances...
I suddenly and unexpectedly lost one of my oldest and closest friends very recently, and - though I know how little weight it carries - I do know how it feels. Nearly three weeks on and I'm still trying to process it, but at least he had his proverbial "four-score-and-ten"...
Talk, share, eulogise. It's all we have at these times.