The whole critical and complicated duality in the mind of adult love buds - the given lines in the article - When you think about “forever,” and picture this person next to you — how does it feel? - reminds me of the stories that are in the book Arabian Nights -

Metaphorically what is inferred in whole - that if one partner has certain fears or hesitations - then in consequence of that either new partner or old partner or ex - partner or upcoming partner will find incompatibility in marriage.
ACTUALLY SUCH FACTOR IS QUITE OPPOSITE LIKE IN THE LINES :

Every moment and every age,
every day and every night he comes, comes, ever comes.

Many a song have I sung in many a mood of mind,
but all their notes have always proclaimed,
`He comes, comes, ever comes.'

In the fragrant days of sunny April through the forest path he comes,
comes, ever comes.

In the rainy gloom of July nights on the thundering chariot of clouds
he comes, comes, ever comes.

In sorrow after sorrow it is his steps that press upon my heart,
and it is the golden touch of his feet that makes my joy to shine.
Rabindranath Tagore
ENJOY THE SONG
//youtu.be/T9GmO_WFhjQ