Odd recurring Dream...?

I've been dreaming about holding hands with some man occasionally for the past couple of months. I never see his face or anything just our hands. It's almost as if a camera is panning in on us holding hands. If I hear him talking it's just mumbling. Once we were clearly speaking spanish though, but it's usually incoherent talking. I think the hands have changed complexions too. The first few times I had the dream the hands were a brown sandish color, now they are a light olive complexion. The hands got younger as well. They looked weathered like the hands of an old man,and now I dream of a man with young hands . It's not someone I know. Why does this keep happening and what does it mean?