Fathead!

Are some guys just so thick that they don't get it when a girl isn't interested? I went out with one date on this guy and he starts SMSing and calling every day like mad. And when I ignore those SMSes and calls he starts sending me pathetic SMSes asking if I'm angry or annoyed and starts begging me to tell him why I'm not replying. Isn't it very obvious that I am so not interested? For Christ's sake, we've only just met, we weren't even friends to begin with. It's like, one yes to dinner seems to mean to him that I'm already his girlfriend. Pathetic doesn't even begin to describe what he's like!