Act like a stalker. Follow her around everywhere, give advice in a creepy voice. Be there in the background every time she turns her head, no matter where she is. Be emotionally and physically distant as much as possible, but profess an undying love for her often and in as disturbing a tone as possible. Act sexually uninterested in her, but hold her up as this unattainable, perfect being. In general, be a repressed, obnoxious, disturbed little snot.
Oh wait, that seems to work pretty well if you're a member of the cast of Twilight, so never mind.
Oh wait, that seems to work pretty well if you're a member of the cast of Twilight, so never mind.