Originally Posted by sigma1299
So my advice would be to talk to him and when he does something right let him know - over the top - make sure he knows you like what he's doing...IMO the safe word is a good idea, I asked my wife about this and she blew it off. If we had it in place I would feel much better about pushing the boundaries with less direction from her.
The proper reaction will do so much more for you than anything you'll get him to read in a book or a blog.
Although once he understands, you could point him towards MMSL.