Niall Horan and Demi Lovato are said to be "casually dating".

The One Direction star and The X Factor judge spoke about their mutual attraction in the past, but Demi has reportedly confessed to some close work friends that she and Niall are seeing each other, although it is a long distance relationship.

A source told the Daily Mirror: "Demi’s told the guys backstage she and Niall are loosely dating – it’s casual but they are definitely dating, albeit long-distance."

Lovato previously said that Horan had a lot of qualities she looks for in a man, however insisted that they didn't want a long distance relationship.

She said: "He has a lot of great qualities. He is an amazing listener and makes me laugh a lot, two of the main qualities I look for.

"He knows I have a little crush on him, and we enjoy having dinner when we get the chance. We speak and message all the time.

"I don’t want a relationship over Skype; we are both in a place where we feel zero pressure to rush. We share the philosophy that the right one is worth waiting for."