Everyone loves a wedding.Bravo’s debut of “Bethenny Getting Married?” drew 2.1 million viewers Thursday night to make it the biggest series premiere of any show in the cabler’s history. Skein, which landed 1.3 million viewers in the 18-49 demo, is a spinoff of “The Real Housewives of New York City,” which Bethenny Frankel co-stars. Frankel is the daughter of Hall of Fame thoroughbred horseracing trainer Bobby Frankel, who died last year. The first of three “New York City” reunion specials, which aired at 9 p.m. prior to “Bethenny,” scored 2.2 million viewers. The second and third parts will air today and Thursday, respectively. Bravo recently upped Frances Berwick from exec VP of programming and production to the newly created position of general manager.