It's a thin line between love and craze. For a person in the limelight, strange encounters with fans is par for the course. But there have been times when a fan will go from humble follower who may want a picture at an inopportune time to deranged obsessor who will sleep in your house when you aren't there. Yes, that happened. J.Lo, Rihanna and Beyoncé are just a few who've had to deal with such an ordeal. Click on for stories of when fans go too far.
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