Reed and Sue are considered "iconic" and healthy?
I know this scene is considered one of the most beloved Scott and Jean scenes, but it wasn't supposed to get the reaction it did, IMO.
In the entirety of the Dark Phoenix Saga, Professor X and Cyclops constantly fret over Jean's growing powers. They had trouble trusting a woman with such great power, and it ended up blowing up in their faces, literally.
In this scene Jean is asserting
power over Cyclops and neutralizes his powers, and he's not in the moment with that kiss because he can't believe Jean can control all that power (unlike him)!!! While their trust may have evolved later in their relationship, this is an indictment on Cyclops and how he viewed her and her powers in their earlier years of their relationship.