Demi Lovato rules out romance with Niall Horan, and on his birthday of all days!

It might be Niall Horan's birthday today, but it doesn't look likely he will be getting a birthday kiss from Demi Lovato.

Demi and Niall were rumoured to be getting flirty. Copyright: [wenn]

Things were rumoured to have got flirty between Demi and Niall following the VMAs when the pair were spotted on a dinner date.

We got very excited that this could be the start of a pop power couple.

However, Demi has officially said nothing is going on and they are just mates.

[Related Story: One Direction's Niall spotted with Cover Drive's Amanda]

[Related Story: Niall Horan is manic says Tulisa]

Demi says: "There is nothing going on, he just a good friend."

Darn it.

She went on to chat about how pleased she is that the One Direction boys managed to bag three awards at the ceremony and then repeated again that she an Niall are just friends.

Dost thou protest too much?!

Niall has a history of getting rather excited around birthday cakes. Copyright:[rex]

In other Niall related news — the One Direction cutie is 19 years old today, so a big Happy Birthday to him!

We just hope he doesn't shove a cake in his face like he did on One D's first birthday last year!

The Directioners have been going mad with happy birthday messages to the star and Niall tweeted his thanks, saying:

"Just woke up! im 19 wohoooo! thank you all soo much for the birthday wishes and stuff! love u"

We can't believe he is only 19 and already a squillionaire popstar, it's just not fair!

Demi hasn't said happy birthday to Niall on Twitter, but considering the time difference between here and the US, let's not jump to any conclusions.