Demi Lovato and One Direction's Niall Horan are still not dating. The "X Factor" judge is once again shutting down rumors she's seeing the fair-haired boy bander.

"No, I'm not [with him]. He's really sweet and he's one of my really good friends now. But I'm single at the moment," she said in a backstage interview she filmed during "X Factor" auditions. "And I plan to be for a long time because I need to focus on my career and myself and my well-being before I think about getting in a relationship with anyone."

However, she is in the very beginning stages of her relationships with her fellow "X Factor" judges, which includes one very lively one with Simon Cowell. "Everyone's really great, except Simon. No, we have fun together and he does tease me, a lot. But, I give it back to him. I don't mind," she said. "He's sometimes not very nice to me, but I have fun with him."

But, she does have real love for the one and only Britney Spears. "I grew up listening to her," she said. "So it's really awesome to be able to sit next to her on the panel."

Britney added, "The same for her, too, I totally admire her work and everything that she's done."

Lovato also opened up about the challenges of having to judge fellow singers.

"I mean, one, I definitely didn't think that it would be this challenging because saying no to people is really hard and emotionally it kind of messes with you a little bit 'cause you don't want to say no to some people, and then some people you're torn and you know in the back of your mind that if you say no, what if that was their only shot and you let them go when they weren't really that bad?" she said. "It's just really confusing. But it is everything that I expected and more, with having fun and just bonding with the cast and everything. Like, everyone's so sweet and awesome and the crew's amazing, so I'm having a lot of fun."