i deadly believe that when a man stared at a woman,
as she is a woman.
not because u are pretty or sweet or gorgeous like a damn or what,
but it's naturally occur.
it's a nature when a man feel attracted to stare or to catch a glimpse
at a woman.
that's why Allah sent down to us this verse as His reminder,
Allah the All-Knowing :)

Quran 24 : 30
Katakanlah kepada lelaki yg beriman, agar mereka menjaga pandangannya,
dan memelihara kemaluannya ; yang demikian itu lebih suci bagi mereka.
Sungguh Allah mengetahui apa yang mereka perbuat.