IAmLadyDreamer - While we dream are paralyzed, so our conscious personality can not longer function. So your conscious will no longer functions and another will takes over - your life will, the will or power that keeps you alive but which most of us are totally unconscious of. And while we dream we are living in a very different world than the conscious world - the inner world - and in that world, controlled by our life will, we live by very different standards and morals.
So your dreams are showing you a very different view of life than the happily married woman that you are. As an example your memories are all there available and alive. We take so much in from those we have lived with or had a relationship with, but often we are unaware of it. You have taken in millions of bit of memory, lessons learnt, life experiences along with all the feelings or problems met by loving and living with someone and they are what makes you the person you are. So maybe this was someone you knew and you are building a closer relationship with what you hold within you as memories.
But if not that, then you are exploring your own feelings of having a loving meeting. See
http://dreamhawk.com/dream-encyclopedia/archetype-of-the-animus-jungs-view-of-the-male-in-the-female/Tony
