Ginah2013 - I too have been involved in such games and have always backed out, sometimes as your dream suggests, to the detriment of the other players.
Mine were not in dreams but were real life situations, and for years I found that although I felt I was right there is another side to it. I remember one time I pulled away and years later I realised that the young woman had felt love for me and my pulling away had caused her pain. But I see that your dream was about sexual game playing, a different scene.
So I wonder why you had this dream, because dreams have a real point to make, and as you were creating your dream and did not feel right about it perhaps there is another way to feel okay. For instance if I had more feeling of caring for that young woman my life would have been enriched by sharing something of another person's life; a very important thing to have missed.
So I wonder if you enter into your dream, not with the feeling of it being unprincipled, but with understanding, and experiment with ways of changing the dream until you find something that feels right for you and satisfying.
I am not suggesting playing sexual games but of finding or changing what you met in the dream into something that you feel good about. See
http://dreamhawk.com/dream-encyclopedia/secrets-power-dreaming/Tony