Demi Lovato tired of 'nagging' Simon Cowell

Washington, June 21 (ANI): Demi Lovato has revealed that she is tired of being nagged by fellow 'X Factor' judge Simon Cowell, but said that she is a "brat" who gives as good as she gets.

The 19-year-old singer admitted that Cowell tries to keep her and fellow panellists L.A. Reid and Britney Spears in line during filming of the talent search contest, but she isn't afraid to stand up to his bossiness.

"Simon's great, but he nags on me so much that I don't know if I can take it any longer," Contactmusic quoted her saying.

"I'm a brat. I'm annoying. But I give it back to him," she said.

While Lovato has clashed with Cowell, she has made a firm friend in Reid, who said they will be best friends forever (BFFs).

"Britney is such a massive star that it's slightly intimated. She's really sweet, just really loving and charming, but she's intimating because she's such a big star," he told 'Access Hollywood'.

"[Demi] is like my BBF for life. BFFL. She's really too good to be so young," he said.

As a judge, Lovato admits she is very honest and sometimes finds it hard because she knows her opinion will upset the hopefuls.

"It's really hard for me to smile if they're performing and they're horrible.

"I have to be super super honest and sometimes I feel bad about it," she added. (ANI)