I'm not sure about others, but if a guy refuses to kiss his girlfriend in public, won't she feel like that you are afraid to show
your feelings for her. That can be a touchy situation can't it? On one hand, you don't want her to be disappointed or feel that you care about public opinion more than her. But on the other hand, it makes you feel uncomfortable in front of lots of people.
Especially when you are in high school hanging out with your boys and your girlfriend comes up and plants one on you. You just know that when she leaves, the boys are going to let you have it.
I get very uncomfortable seeing other people kissing.
I have no idea how to kiss someone so i guess I would also feel very uncomfortable if I were to kiss someone in public. I also would probably have a black eye when the person I kissed punched me.
I like PDA's of other people, it makes me smile, sometimes turns me on.
Depending on my mood I need my space and really don't want to be kissed in public. I also have to be careful: I've kissed one of my girlfriends in public (in a dark corner, late at night) and some guy in his honda civic skidded around so he could drive by us and scream that us "dykes are going to go to hell and should all put to death". Since then I've been more reserved before leaping on someone.