A father, whose son is dead, and a woman are sitting on a porch, looking at the stars. The father is crying and the woman is talking about his son like he is still alive. She says things like:
This is your son 2 years old, walking around.
This is your son 10 years old, playing football, he is so strong.
This is your son 15 year with his first girlfriend, she is beautiful.
I only remember this very specific scene, the movie was probably sf. But actually I don't remember the rest of the plot.