Dear Kitty Kat,
I think the most interesting part of this dream is the broken bone in your back and the fear that you will be paralyzed so you don't make any sudden moves. It made me think about "having backbone" or resolve about an issue. It seems like you aren't totally resolved that this is over between the two of you and that you are vulnerable or are still available anyway. It is interesting that you are afraid to make a sudden move (make a move toward him or away from him?) but as a result you are paralyzed anyway. The sex part is maybe wishful thinking...