is that moment when someone very dear to you is slowly, gradually drifting apart from you
and you can do nothing but helplessly stand on your very own feet, staring at his/her back moving away from you, become smaller and smaller and finally he/she is outside your reach
you helplessly stare at his/her back. crossing your finger to hopefully see him/her just turn around to give the last gaze, but even just one more gaze is apparently a far cry from reality.
and you'll stand, alone, and finally you'll continue to walk on your path, knowing that your very dear companion is not anymore by your side.