But Liam Payne, 23, has revealed that she doesn't like being reminded of their 10-year age gap, and takes offence when people joke about his young age.
One fan commented: "Demi invented soul-trap infused R&B-pop!
#Sorry Not Sorry If you call this generic and bland, you're literally clawing for ways to hate."Another enthused: "Demi Lovato took all the hate she got and created this masterpiece, we stan a genius everybody.
However the Disney star has finally spoken out and confirmed to the Huffington Post that he is indeed dating a girl he met after she tweeted him relentlessly for five years.
A representative for Austin provided the following statement: So there you have it.
When Roman asked him what her most important tip was, Liam blurted out: 'Bigger is better.'The singer realised the unintentional double entendre all too late and turned to the camera to say: 'I don’t know how to take that really.