Party at Gracie!

Mayor de Blasio said he’s letting his teenage son Dante rule the roost on Super Bowl Sunday by inviting all his high-school pals to Gracie Mansion for a Mexican-themed fiesta.

Hizzoner acknowledged feeling early symptoms of empty-nest syndrome with Dante’s anticipated departure for college later this year — making this the last time his son would be living at home for the big game.

“We told Dante he can decide what we are doing, so he’s inviting some of his friends from Brooklyn Tech,” the mayor said at an unrelated press conference in Brooklyn.

Last year, de Blasio watched the Super Bowl at his Park Slope town house with Dante — ducking out to a nearby fire station for one quarter.

He was coy Friday about backing New England over Seattle in the game.

“We will watch both teams, with a particular interest in one team,” he said. There was little doubt that the mayor, who hails from Massachusetts, meant the ­Patriots.