No stalkers allowed

Once upon a time you were loco about a particular celebrity. Having crushes on celebrities is normal. IT happens to evryone. I remember when I was in high school I had the biggest crush on Daniel Johns (silverchair vocalist) well i still think he's hot but I'm under control now. We daydream about them, talk anout them and doodle their names on our notebook, just to show everyone how much we like them. But where exactly do we draw the line between having a crush, to being obsessed, to...gulp, being a stalker?