No, don't be silly. All guys WANT sex, but that's not all they want. That's actually a pretty rude thing to say about guys. It's like saying that they cannot be trusted or respected since they're all sex maniacs. They are not pigs, but there's quite a few, especially young boys that are immature and act obnoxiously like them. But all guys want to be treated like humans. They are humans, and naturally, they want love too!
PS - As a girl, I'm sure you've wanted sex before. It's just human nature to want these things. :x