I have been following the story of john terry deposed england who had an affair with his best friends girl fri?

who!s relationship was over,john terry wqas sacked for this so called misdomeanour, which was a little harsh,but my point is that if this was so important as to warrant this action how is that prince charles and camilla committed adultery in full public glare,and charles could be king and head of the protestant church why was he or why is he not sacked from the position as future king,it seems to me we have one standard for some and different for the monarchy