Are One Direction star Niall Horan and Demi Lovato having a secret romance?

Love could be in the air

Niall Horan is currently touring the US with One Direction

Niall Horan has been chatting on Skype to new US X Factor judge Demi Lovato - sparking rumours they're in a secret relationship.

The pair's web calls were outed on Twitter yesterday by Shari Short, who sings for Demi.

'@NiallOfficial it was nice to meet you over Skype with @ddlovato are you going to come to one of our shows in the US this Summer?' Tweets Shari.

One Direction star Niall and Disney favourite Demi were first linked back in April when they were reported to be exchanging flirty texts.

The pair have also been known to chat on Twitter and Demi, 19, has admitted in the past that Niall, 18, is her celebrity crush.

'Skype was weeks ago! Omg! Friends,' Tw eeted Shari after she was flooded with messages from Niall's fans.

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