Do people with Aspergers grieve differently to others?

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.