A silenced promise

He saw it floating in the sky weak and lost- a promise that he once made
A promise to light up each others smiles, re-kindling them as needed
The promise had lofty ambitions, but appeared simple at that time
It just aspired to preserve how they felt about each other for ever 

For the promise to be alive, it had to be fueled with moments of joy, 
laughter, love, which was madly irrational and never conditional. 
Over time, the promise grew thinner and weaker, 
only feeding off the silence that engulfed around. 

In his mad rush to climb the castles floating in the air,
he started feeding the promise little bit of this and that. 
Before long, he only had silence to provide.