Duffy introduces the emotion of embarrassment to the reader, noting the 'private jokes' they had that were once hilarious, but are now just dull and uninteresting. not only is there embarrassment in the 'no longer comprehended' private jokes, there is the mention of recklessness, which one would sigh at and think, 'what on earth was I doing?', all in the rapid rush that is love, when actions and words are not often considered.