
Smash and Coach are the best relationship dynamics in FNL.
I think throughout FNL the best relationship is between Smash and Coach.
Coach literally put his job at high risk so that smash could have a chance at playing post juicing. He mentored him throughout his obsession with Grady Hunts list, dealing with racism (both seasons), and overcoming a devastating injury.
His character growth is so well done in the series and at the end of the day coach kept his word and got him to college