Out of Sight, Out of Mind

I thought I heard your voice amid the noise on the street.
I imagined it at best, but the knot in my chest still skipped a beat.
I cannot concentrate or think at all of late for the thought of you,
Though it's been so long since the day I found you were gone when I came to.

Llast night, I saw your face. but something was wrong that I could not quite place.
Suddenly I began to realize: the eyes I did not recognize.
I woke up with a start and a pounding heart, gasping for air.
I thought you were a ghost, or a dream at most, but you're everywhere.
Was that you just then, calling me again?