It can now be confirmed that Callie and Arizona will be married on the May 5th episode of Grey’s Anatomy.
Mark Slone will walk Callie down the aisle (because her father is not around which will be explained in the episode), and there will also be tension with her mother (played by Gina Gallego) because of her sexuality.
The reason that it is being speculated that the wedding is a front is because while Callie & Arizona will be married, on a recent set visit, all cast members were in attendance except for Ellen Pompeo (Meredith) and Patrick Dempsey (Derek) fuelling speculation that the two will be married right after.
