If it took you until now to figure Charlie might (and prolly will) turn heel, then wow. I figured it out upon the second week of the angle (at first, I figured it was just stupid stuff for Dawn to blurt out, but then they went on with it). It IS pretty obvious and has been.
So what would surprise me is if Charlie turned out NOT to be sleeping with Dawn Marie.
Or they can go the way of the Billy Gunn/Torrie Wilson and Noble/Nidia deal (I think it was Noble and Nidia) and have all four end up in the same bed at the end....