As confident as Layton is I do think there is vulnerability there too and sometimes the confidence has a hint of bravado to hide that.
One thing I did notice looking back at all their dances is how they both respond at the end of the dance (apart from after the AT where Nikita stayed in character and Layton was visibly overwhelmed). Nikita always shouts out and slaps Layton or the floor in triumph because he is competitive and he knows they have ‘slayed the house down’. Layton always grabs Nikita for a hug (and who can blame him
) and I feel that he does look to Nikita for reassurance. Layton has been a stage performer since a very young age and is very flamboyant but is usually playing a role. This is him putting himself out there and sadly getting a lot of hostility which I think does get to him.