I've been told that my lack of grief may be the result of my Aspergers. I've had my grandmother die of old age, aunt of cancer. Also had a friend die by suicide. In all of these deaths, I felt shocked and sad, but never cried or felt devastated. I moved on quickly. My parents have always said that there must be something wrong with me in general because I don't show normal emotions and the lack of grief solidified their belief.
I suppose though I don't grieve normally because I've never really had a bond/relationship with anyone. I've actually had conflicts with many people due to my weirdness, my family included and had homicidal impulses towards them. I've always felt distant from everyone. I guess in that situation, you wouldn't care at all if you lost someone. I definitely think If I had a close relationship with a girl, then I'd be hurt if she died but so far, that hasn't happened yet.