The fact that he got through this without crying, I give him so much credit.
And Simon's words at the end?
One Direction member Louis Tomlinson returned to the 'X Factor' stage tonight to perform his new single 'Just Hold On', alongside DJ Steve Aoki. What made this special, was the the performance was a dedicate to Louis' mother Johannah who passed away a few days ago after a battle with leukemia.
Check it out below: