"Even though I try, I can't let goooooo!"

There are fans, and then there's fanatics! Following a recent appearance on the David Letterman show to promote her new album, Me. I Am Mariah… The Elusive Chanteuse, Mariah Carey had a meet and greet with her "Lambs," but one just couldn't let her go.

After signing a few autographs, super fan (Robert) stood next to the vehicle Mariah and her crew were in, and shouted his admirations through the window, to which Mariah finally scrolled the window down and took a selfie with him. As the car drove off, Robert chased it down the street for what looks like many blocks, singing his little heart out.

Watch the fandamonium unfold…