Imperfections. Transgressions. Hidden agendas.
All these things and more, no matter how cleverly disguised — especially in relationships — will be revealed over time.
It's not a matter of if but when. Could be soon, could be ten years hence. Like a building with a faulty foundation, eventually, the truth will be revealed.
The understanding beckons us to live truthfully now, for its own sake of course, but also to ensure avoidance of painful reconciliations later. Short term gain at the expense of long term sustainability is always at odds with harmony.
It's the intent that matters. The execution a little less, as we can't be perfect all the time.
The intent is to be true to yourself and by consequence, true to others and the world.