SAD: KEVIN JONAS Ignores Fan's Pic Request ... In Saddest Video Ever

This video ... IS SOOOOOO SAD!!!! A passionate Jonas Brothers fan waited outside Katsuya in Hollywood last night -- in the cold and the rain -- for a moment with her hero, Kevin Jonas ... only to learn what rejection feels like. It was SOOOOOO SAD!!!! FYI -- Kevin DID take pics with a bunch of fans as he left the restaurant with his wife ... trying to please everyone ... but the superfan got lost in the crush and never got a chance to pose with her hero. Still, SOOOOO SAD!!!!

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