After months of speculation, Demi Lovato and One Direction singer Niall Horan have yet to put the romance rumors to rest. While Horan is currently back home in London, before he jetted there he reportedly nabbed some private time with Lovato while he was in L.A. for the VMAs.

The VMA winners and performers were spotted at Harry Morton's Pink Taco in Century City after the VMAs, where sources tell E! News that they were on an "intimate date."

Interestingly enough, just before the VMAs went live last Thursday, he shared his feelings about the "Give Your Heart a Break" singer, telling "Access Hollywood" that Lovato is his celebrity crush.

While the twosome might now be in two separate countries, late Sunday they were still tweeting back and forth to one another. ".@NiallOfficial Yep...things are about to get very interesting!!! #Sept 12," she tweeted after he wrote about catching up on episodes of the "X Factor." One Direction competed on the show in the U.K. in 2010. The U.K.'s current season is underway and the second U.S. season kicks off this week with Lovato in the judging chair for the first time.

Rumors about a Niall/Demi romance kicked off earlier this summer, but back in June, they gave the old "we're just friends" line about their relationship status. A month later, she once again brushed off any talk there was anything brewing between them.

"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. "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."