Demi Lovato Declares Love For 'Grumpy Old Man' Simon Cowell, Gushes About 'Stunning' Britney Spears

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They may have bickered like children during their time together on the X Factor USA but Demi Lovato has declared her love for her boss and co-judge Simon Cowell publicly on Twitter.

Taking to the social networking site following Tate Stevens victory on the show, Demi wrote:

However, Simon wasn't the only one Demi gushed about as she soon heaped praise on Britney Spears, calling her "stunning" and "down to earth"

Promising to look after Britney's two sons, Demi added:

Admitting that she is going to miss working with L.A. Reid on the show, Demi tweeted:

Ahh we're going to miss the judges!

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