The 25 year old reveals an argument with his pal got out of hand and became physical during the group's rehearsals in London, prompting George to storm out.
But the star admits he soon changed his mind and returned to work after getting lost in the U.K. capital.
He tells Ok! magazine, "Me and Tom had a bit of a punch-up a couple of years ago during rehearsal. I walked out, and resorted to wandering around (London area) Battersea with no clue where I was going. I ended up on an industrial estate. I s**t myself and had to go back. I was like, 'All right, I think I'll stick to The Wanted.'"