Doppleganger?

I’ve had strange dreams before, but I had one last night that I thought was particularly interesting.  What does it mean when you are playing poker with your doppleganger?  I’ve never even heard of such a dream, not that I am one who reads about dreams and such.  Weird shit though.  Can’t recall whether I was winning or losing, but given my lack of skill at poker I can’t say I feel confident that I was doing well.