Do you think that there is friendly relationship with boy and girl exist? In my opinion its not exist because most times it goes on sex. what about your opinions?>
I disagree with you completely, not everything is about sex and if it is for you, then I think that's weird as hell and you must be one hell of a horny person. I'm friends with a few girls and wouldn't think about having sex with them, not because I find them ugly or anything but because I only see them as my friends, more like sisters to me and having sex with your sister is a bit messed up. So yes, friendship with boy and girls do exist.
I have a good friendship with a couple of girls / women, and sex isn't a part of it, in fact they are more like a sister in feelings.
I have some friends who are girls too. Sure, it's confusing at first when they talk to you and act all friendly... I've messed up a lot.
Yes a boy and a girl can be friends. xP There's a boundary between a friend who's a girl and a friend who's a boy, and that boundary is usually never crossed so there's no reason why if you're a boy you can't be friends with a girl and vise versa.