This, here too. Nobody, nobody at all other than my friends can comprehend the fact that you can actually talk to girls without implying flirting or lechery. I have a few friends who're girls, and every time I'm seen chatting or walking home with them casually there's always at least one or two people who whistle or shout out something about a girlfriend. It sickens me entirely, and sometimes it goes to the point whenever I see it as some kind of sexism.
I don't usually end up initiating conversations with other girls in the school though, because they are just so excessively dumb and retarded (apply that to most of the boys here too) that I'm pretty sure talking to them is causing me major brain damage. So I've never had to go through what you described; but I can see how irritating that would be.
EDIT: I feel like quoting Ame here:
"So here's the thing with those types of people. They may look like they're popular and have a bunch of friends, but the truth is by and large, they don't know how to be a decent enough person to really let someone get close to them. They choose a quantity of artificial relationships over a few genuine quality ones. Now, they'll die before they admit this because they have an ego to protect, but think about it, and it makes sense. They're the ones losing out."
Made me feel a little better about that.