I'm just wondering whether both sentences would be correct:
I look into the eyes of anyone who looks at me.
I look into the eyes of everyone who looks at me.
Would it be correct to assume that when I used anyone in that way it would mean I am questioning whether anyone looks at me. However when using everyone I'm just stating the fact that I look into everyone's eyes.
If both are correct I really like the distinction. Not possible in many other languages.