X-Factor's Nicole Scherzinger Creepiest Marriage Proposal EVER!

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Marriage proposals are sweet, right?  Well not when some random dude invades your space while you're trying to tape "X-Factor." 

As Nicole Scherzinger sat at the judge's table during a taping break, a Hungarian dude who was in the audience bolted toward her, got down on one knee and ... we'll she didn't say yes.

Security removed him from the CBS lot. 

Fox had no comment.