What does dreaming about a deceased person mean?

I had a dream last night about an ex who passed away 20yrs ago. I woke up multiple times throughout the night, only to find myself back in the same dream. In my dream we were together as a couple living life. Walking, talking, bought a house, I have never experienced a dream that felt so real before, so detailed.... show more I had a dream last night about an ex who passed away 20yrs ago. I woke up multiple times throughout the night, only to find myself back in the same dream. In my dream we were together as a couple living life. Walking, talking, bought a house, I have never experienced a dream that felt so real before, so detailed. Why after 20yrs would i have a dream like this?
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