Georgie & Mandy’s First Marriage is bringing back one of Georgie’s ex-girlfriend’s from Young Sheldon, which has some viewers worried about his relationship with Mandy. Emily Osment recently shared a photo of herself in character as Mandy on set with Ava Allan, who played Jana on Young Sheldon. “Well THIS can’t be good,” Osment captioned the post. TV Line has since confirmed that Allan will appear in a December episode of the show, but details about why she is coming back are not yet known. 'Georgie and Mandy's First Marriage' Cast's Quotes About Couple’s Age Gap Georgi...