GaGa Fears She'll Be Killed Like John Lennon

Lady GaGa has become convinced a fan could try and kill her, so has asked her security to watch over her as she sleeps.

Insiders reveal that the Bad Romance singer - who was painfully shy before she was famous - has received disturbing fan mail, which has made her fear for her safety.

"GaGa thinks some of the fan mail has been pretty ominous," says one source. "Some of her fans are completely obsessed - they make weird comments like saying they won't be happy until they die with her.

"She worries over how John Lennon died and fears the same happening to her," they add to heat. "She has these horrible thoughts that there may be plans to kill her.

"Her security team are always close by. She is becoming more and more reliant on them and won't go anywhere alone. Her bodyguard even sits in her room as she sleeps."

The source also claims her extra security is causing a problem in her relationship with boyfriend Luc Carl.

The insider tells the magazine: "Luc is getting a bit sick of having security around all the time. When they're hanging out at GaGa's place and her bodyguard is there, it kills the mood. But if she feels safer, he understands."