I was looking up at you and you were looking down at me.
We were holding eye contact and you asked me what I was doing.
I told you I was waiting to see if your eyes would dilate.
What I didn't tell you was that I was waiting to see if they would dilate when you looked at me because you loved me.

Science says that a person's eyes will dilate when looking at someone they are attracted to.  
I'm sure my pupils had enlarged while looking at you.
You replied they probably would, referencing to  the lighting being dim, not in reference to what I was thinking.
I don't remember your pupil ever dilating when you were looking at me.

I don't recall you ever loving me.