This dream seems to express the dreamer's grief, facing a vast, empty (?) future without the companionship of the lost friend.
maybe your friend was in love with you or you were in love with him.
what does it mean to dream dead peopletake you to with them
It is a safe bet that you would have liked your mother to have met your new boyfriend.
The dream means that you are grieving the loss of your friend. Such dreams are very common shortly after a death, but they can continue on and off for many years. The feeling that your friend is not okay is a "projection" of your own feeling that his death was wrong and frustration that you could not prevent it.
It is not possible to provide an interpretation without some information about the dream itself. However, because a dream is always about the dreamer, it is safe to say that "your friend's dream" is about "your friend."
The dream means that something - perhaps a subtle sound, sight or odor, reminded you subconsciously of your friend, and that memory appeared in a dream. It does not necessarily mean that the friend is actually sick. All the same, the dream gives you a fine reason to call your friend.
NOTHING
Mourning...
The category "the dead" is far too broad to risk any single interpretation. Your dream's meaning depends on whether "the dead" in this particular dream referred to a beloved friend or relative, such as a grandmother, spouse or child, or whether "the dead" were overly dramatized Zombies or Horror film ghouls. The website linked below provides extended discussion of these and other possibilities.
This dream suggests that the dreamer recognizes the influence of the past in the friend's life and/or the dreamer's own life.
I this dream last night, it was strange.
The dream merely illustrates your natural affection for your friend. You could use the dream as a fine excuse to get together and have a long chat with your friend.