That creepystalker is just like his older brother, the creepystalkerweirdo, strange.
the stalking includes but is not limited to: facebook lurking, gathering information from friends, calling excessively, cryptic text messages, frequenting common places, dropping by unannounced at work/home/etc.
the creepy part is that the creepy stalker intentionally adjusts the mechanisms of his/her life to chase their delusions. Probably has some prepubescent sexual fantasy and/or tween crushing involved in their cognition process.
Florence: What's he done?
Beth: Oh just about everything listed above. This last text message about the movie he saw last night and how he thought of me because of it is simply the sprinkle on the cherry.
Rachel: Just say No to creepy stalkers.