See, what's really interesting is, you suggest that your son sees two people, his parents, who are not living a magical life, working through their problems.
You suggest that the rest of the world sees you as happily M.
From what you post here, there is little being worked through as you submit you are simply living this pretend life until your s graduates.
You are lying to your S if you are pretending to be showing him how to work things out, while you are not.
You are showing your S that it's OK to lie to others by pretending to be happily M, while you are not.