A baboon in a forest is a matter of legitimate speculation; a baboon in a zoo is an object of public curiosity; but a baboon in your wife’s bed is a cause of the gravest concern.
God bids you not to commit lechery, that is, not to have sex with any woman except your wife. You ask of her that she should not have sex with anyone except you -- yet you are not willing to observe the same restraint in return.