All people dream, but not everyone remembers.
Many people have dreams about deceased loved ones.
Freud offers interpretations. The dreamer may be concerned about what this person might think about the dreamer's lifestyle if alive. If the dead person exists at times and not at other times, then the dreamer may be wishing for an indifference towards their loss to cope with the pain of separation. It is difficult to find absolute truth in dreams. There are many interpretations.