Themes
One day, you look at the person and see more than you did the day before, like a switch was flicked somewhere. And the person who was just a friend is suddenly the only person you can imagine yourself with.
— Scully • The X-Files

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The change from friendship to love is described as a sudden shift in how someone is seen. The switch image makes the transformation feel quick and surprising. A familiar person acquires a new significance, becoming the only imaginable partner rather than simply a friend.
Context reviewed