as for me, nakagawian ko na talaga yan.. not for any reason at all pero mas swabe kasi humalik kapag nakasara ang eyes, feel na feel kumbaga ang init ng kanyang mga pisngi't labi... but silly me though, i open my eyes sometimes once lips to lips have started hahaha, why? eh masarap din tignan ang partner kapag intimate ang kanyang response.... i'll leave you sir with this article that i have sourced out just for you...
WHY DO WE CLOSE OUR EYES WHEN WE KISS?
Most people can’t focus on anything as close as a face at kissing distance so closing your eyes saves them from looking at a distracting blur or the strain of trying to focus. Kissing can also make us feel vulnerable or self-conscious and closing your eyes is a way of making yourself more relaxed. It’s like turning out the light before having six, but in miniature.
credit to the source : sciencefocus.com
(http://s2.postimg.org/loowqx1dl/kissing_lips.jpg) (http://postimage.org/)