Your pupils dilate?

Okay guys, have you ever noticed in yourselves or other guys that when you see a girl you find pretty or attractive, your pupils dilate? Girls have you ever seen a guy's eyes do this? I'm asking because I heard somewhere that a guy's pupils will dilate if he is around a girl he likes, but I thought it probably wasn't true, because it was in some weird article or something...anyway, when I was walking outside after school with a guy, (and we had established that we do like each other), it was really bright and sunny out, so usually the pupil is fairly small to keep out some of the light, but when I looked at his eyes, his pupils were huge, bigger than normal. They aren't usually like that, but here lately I've been noticing it more. Please answer the poll and give me your comments below for explanations or reasons or stories or whatever. Thanks ahead, and all input is welcome!
Yes, a guy's eyes will do that
No, a guy's eyes won't do that
I don't know, I just wanna see the answers
Select gender and age to cast your vote:
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+1 y
Okay, I guess I should have made this clearer...I already know he likes me because he told me, and I wasn't using that as a sign...it was more of an afterthought when I noticed it yesterday, so I wanted some opinions.
Your pupils dilate?
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