Yikes!

Just when you think it's over, it's not!

While signing autographs over the weekend in the UK, someone asked Demi Lovato, "How's Selena [Gomez]?", to which Demi replied, without hesitation, "Ask Taylor!"

Taylor... Taylor Swift? Is Demi jealous that Selena has gotten even closer with the country superstar. If their friendship on the rocks again?