This was good. I like the picture it creates: there's love and happiness, but then out of nowhere a crack appears (which im guessing represents how things dont feel like they are what they should be), and you realize that this crack has appeared because all of the poetry is gone from your relationship. and this poetry represents romance and grandeur and expressions of love.
But the love hasn't disappeared-its still there- it just isnt as evident or expressed to the same extent as it used to be.
Your relationship has become bland, and you want to bring back the romance.
I just wish you'd used more imagery in this; i like the images of the tear and poetry, but besides that, it was boring in verse.