One Direction's Niall Horan Dating Rumors 2013 [VIDEO]: 1D's Irish Heartthrob Has 'Secret Girlfriend' According to Personal Trainer, Ellie Goulding? Amy Green?

One Direction's Irish crooner Niall Horan has been romantically linked to plenty of young beauties over the years of his fame. Demi Lovato, Amy Green, Laura Whitmore, Louise Thompson and Ellie Goulding are just some of the rumored girlfriends he has had, with the "Burn" songstress currently holding the alleged title. But a new interview with the manager of One Direction's personal trainer Mark Jarvis, Ramzy Khachnik, revealed Niall could have a "secret girlfriend" of sorts!

''All the others have had secret girlfriends except Harry," Khachnik said. "Niall has one too but I don't know who it is."

Unfortunately this is all that the manager said, so we still have to speculate on who the lucky lady is. After all, according to his band members, Niall is the best kisser of One Direction and apparently the biggest ladies man.

During a recent interview, Louis Tomlinson proclaimed: "Niall's the best kisser in the band!"

When asked if he would accept this coveted title of "Best Kisser in One Direction," Horan responded: "Dunno. I've never kissed myself."

"You know what, Niall is a secret ladies' man," Liam Payne said. "He gets about, bless him. He's just too cute, so you don't see him coming!"

So if Khachnik is telling g the truth, who do you think Niall is dating? All of the evidence point to Ellie Goulding, right?

When asked about the romance rumors in an interview last month, Goulding responded:

"Oh God I knew this was coming. I just can't talk about Niall. I won't ever talk about my love life any more because it's always then gone wrong when I have in the past."

Again, it definitely looks like Niall's "secret girlfriend" is Ellie, but you never know! There could be a completely different girl or maybe even a past girlfriend!

Last month Niall was caught on his Twitcam hanging out with his ex Amy Green. Check out the footage here: