Never
There are a few things Nathan will never do.
He will never wear white after labor day.
He will never let anyone touch his sexy hair.
He will never let anyone touch his ties.
He will never let his sons watch Sponge Bob.
These were his nevers, but if Peter kissed him right the nevers go out the window.
Ok second and third never did at least. One And four stuck.
But still Nathan loved to be bound and gagged to his bed while Peter plays with his uber sexy hair.
There is a lot of fun with Ties.