Now that's a diehard fan!
"Hope the eagles go back on the road...cant wait.. i'll be there starkers at the front! Hahahaha," he said.
Well now, it appears that the band in fact are currently touring and have an upcoming show in Louisville, Ky., on July 6.
So get ready, 1D fans! It looks like Horan made a promise he's going to have to keep!