Juliet: well, do not swear. although i joy in thee, i have no joy of this contract to-night: it is too rash, too unadvis’d, too sudden; too like the lightning, which doth cease to be ere one can say it lightens. juliet uses the simile in the excerpt to describe her worry that romeo will be harmed in a storm. her shock that romeo uses bad language. her fear that their promises will not last. her dismay that the weather will ruin their meeting.