"ELIZAAAAA is the BEST thing in our lives; so never lose sight of the fact that you have been blessed with the BEST wife! CONGRATULATIONS! For the rest of /your/ life? Every sacrifice you make is for MY SISTER--give her THE BEST LIFE! Congratulations!"
One of my favorite things about this is that he hated himself for throwing away his shot to be president over his affair with Mariah, but he was glad to throw it away for a chance to publicly ridicule John Adams.