so sometimes it happens that me and my wife dream together without even knowing until we tell our dreams in the morning. This gets to happen when both actually got a connection between them. I dont mean by dreaming together that one person is unaware. What i mean is that when i tell the dream and she tells the details or the way around. We didnt knew that we where dreaming together though because those others in the dream are often copies. So to really make sure that it is your partner, grab them and ask them questions only they can know to answer.