Wow, I never thought that it really would be possible. Were your cards handled by other people before they got to you? To be honest, when I got my second deck of tarot cards I felt that one would be jealous of the other. I never did anything about it though. I only keep them in their respective boxes. Maybe it's the way that you treat them? I think it's more about the energy that you may give them, so I think spending some quality time with each until all three of you are balanced.