Dream someone's memories? Ridiculous I know?

Anyone ever dreamed someone else’s memories? I was telling someone close to me my ridiculously disturbing dream and instead of them saying how silly it was and laughing it off or asking what was wrong with my brain, they looked like they had just seen a ghost. I asked what was wrong, what was wrong, and they proceeded to tell me about the terrible thing that happened to them that they never told ANYONE about. The exact thing happened in my dream. Why would this happen? I’m a bit spooked and don’t normally believe in this type of thing so am at a loss. Is there any reasonable explanation for experiencing this?