Samuel Taylor Coleridge
Not at Home
That Jealousy may rule a mind
 Where Love could never be
I know; but ne'er expect to find
 Love without Jealousy.
She has a strange cast in her ee,
 A swart sour-visaged maid—
But yet Love's own twin-sister she
 His house-mate and his shade.
Ask for her and she'll be denied:—
 What then? they only mean
Their mistress has lain down to sleep,
 And can't just then be seen.