I just thought deeply about this.
Sakura is nags so much in your view right?
Lee loves her so much right?
Lee is a hardworker and hits his own forest gym to train whenever he has free time.
Sakura can nag on Lee all day and Lee would always finish the job.
PERFECT!
The only possible thing to stop this is if Lee was so influenced by "youth" and wouldn't get married because of it.