Hello expiringpoet,
I truly enjoy this piece. 
I am sure those who are married have been through this stage,
including me. (Although those not married may also shared similar
experience) 
Now back to the poem.
Ive read all your poems in your blog including this and I have a
few questions in mind. Firstly are there any reasons for the way
you break your lines? If you read the poem aloud what happen is
that the flow gets too disruptive. It staggers like a drunken man.
I am fine with short lines but in my opinion you need to have valid
reasons for having too many one word lines in your poem.
Secondly, any reasons for the way your capitalized your words? Some
poets prefer to capitalize at the beginning of every line and some
at the beginning of a sentence. It is entirely up to you but you
need to be consistent.
Lastly, regarding punctuation and again you need to be
consistent.
As for the content of the poem, I like your choice of words.
At first impression , phrases like political centre,
administration, Intelligence, cultural Exchanges, labelled
etc. clearly reflect the bureaucratic nature of the marriage where
lines are clearly drawn and power struggles is the norm of the day.
Moreover words like intrude, fear, steal, violent incursion
further paint a marriage in trouble.
However, maybe because of the way this poem is structured, if you
read this poem aloud, it is not as dark as it seems to be. The tone
is light and even a bit cheeky. (cheeky may not be a good word but
I cant help using it) 
If you intended this to be a serious poem, in my opinion you have
failed because the tone is inconsistent with the word choice. But
if you intended this to be a light-hearted piece in disguise, I say
well done!
Keep up the good work! 