It is pretty, though it is only the work of a young student.

But some one hundred years before, another student--a very great student, Richard Crashaw,--had a fancy of the same kind, and made verses about it which are famous.

You will find parts of his poem about the imaginary wife in the ordinary anthologies, but not all of it, for it is very long.

I will quote those verses which seem to me the best.
WISHES Whoe'er she be, That not impossible She, That shall command my heart and me; Where'er she lie, Locked up from mortal eye, In shady leaves of Destiny; Till that ripe birth Of studied Fate stand forth, And teach her fair steps to our earth; Till that divine Idea take a shrine Of crystal flesh, through which to shine; Meet you her, my wishes, Bespeak her to my blisses, And be ye called my absent kisses.
The poet is supposing that the girl whom he is to marry may not as yet even have been born, for though men in the world of scholarship can marry only late in life, the wife is generally quite young.

Marriage is far away in the future for the student, therefore these fancies.