Maybe it is just a 21st birthday kiss?! There is no argument that the One Direction posse are the most enthusiastic fans on the planet and so it is no surprise that Directioners are in a bit of a frenzy after a vine apparently showing Mullingar man Niall Horan ‘kissing’ a guy surfaced online. The vine in question was shot at Horan's Vegas birthday bash and allegedly shows the star getting up close and personal with songwriter Julian Bunetta. If we're completely honest, we reckon the lads are having the chats. The six-second clip went viral after it was uploaded by user tbh luke two days ago. Yesterday, Horan sent a tweet from his account seemingly alluding to the rumours:

all these rumours huh? you guys Crack me up — Niall Horan (@NiallOfficial) September 16, 2014

Bunetta also addressed the incident on his own Twitter, responding to a fan who asked him how it felt to have some fans believing that he kissed Horan.

@irelandpunk feels good — )u1!@n (@julianbulian) September 16, 2014

In last year's Channel 4 documentary Crazy About One Direction, which provided us with an insight into the world of 1D super-fandom, we were introduced to the term 'shipping'. To 'ship' someone is to want two people to be in a relationship, this can be sexual or a ‘bromance’. A Directioner explained the reasoning behind the term: “Some fans want them to be gay so they can’t have a girlfriend”.