What is a celebrity? A celebrity is a human other humans elevate to a higher than normal stature. So celebrities are just like the rest of us unless we elevate them to that high stature. They have wants, desires, needs, and secrets just like the rest of us. Although theirs are more televised and published than the rest of us. The one thing that we all must remember is; we need to treat them with the same respect and courtesy that you would anyone else who is not of the celebrity stature.
So if you see one on the street with their kids, they do not want to be hounded by people seeking autographs or pictures. They just want to be left alone so that they can have a nice day with their kids. If you see one in the restaurant with an attractive member of the opposite sex, do not automatically assume that they are dating. People of opposite sexes can be friends and not just lovers or dates. To assume that they can not is not only childish but ridiculous. If a celebrity is out shopping, they just want to shop like the rest of us. Many celebrities will give autographs and pictures as long as you don't make a big deal about it.
I mean paparazzi follows them around enough they do not need the public following and hounding them too.
Just remember that they are human and that they are only classified as celebrities because we put them there.
So in conclusion, Be Respectful and Courteous to all whether they are Celebrities or the average joe public as they say. Step back and put yourself in their shoes. Would you want to be hounded 24/7 by paparazzi and the public? I know that I wouldn't but I would hope that both could respect some boundaries.