Come Christmas, New York dance-lovers have three traditional choices: the Rockettes, George Balanchine’s Nutcracker, or Alvin Ailey American Dance Theater. About 70 percent of the Ailey programs include Revelations, the late choreographer’s gospel masterpiece, of which a high point is “Fix Me, Jesus,” the pas de deux danced most frequently by Glenn Allen Sims and his wife, Linda Celeste Sims. Linda, a New Yorker, joined the 32-member company in 1996; Glenn, from New Jersey, started a year later; and they were married in 2001, on January 5, Ailey’s birthday. They have performed “Fix Me, Jesus” nearly 2,000 times, and they have been cast in some 130 of the troupe’s 250 other ballets—as a couple in about 40 of those. Among Us, the last work choreographed by Judith Jamison, that giantess…