ok last night i had my fourth lucid dream, it was the longest ive ever had it felt as though it lasted for at least twenty minutes. in any case not one but two DC's were friends i know from school. now i talked with them in the dream for a bit and the seemed quite real. during the conversation i told one of them to do a RC for some reason and he did, the DC did and seemed shocked when he relized it was a dream. the DC who was my friend promptly disapeared for no real reason. now i thought this was just weird DC behavior but when i arrived at school today both of the friends who had been DC's seperatley approached me and asked if i had a weird dream that involved them. now has this ever been known to happen before? a shared dream with two seperate people who werent even attempting it? or is this just cooincidince