When Was That Moment?

The saddest question
That he never asked her was
When did you stop loving me?
What was that thing that I said?
That thing that I did?
What was that mistake that I made?
Because I never stopped loving you.
Even though I knew that at last
Our love was broken.
We are memory now,
But what was that thing that I said?
That thing that I did?
That mistake that I made?
When was that moment
That you stopped loving me?