Georgie & Mandy’s First Marriage set image offers a first look at Mandy’s (Emily Osment) ex, who will appear later in season 1. Previously, it was confirmed that Christopher Gorham would join the Young Sheldon spin-off in the last two episodes as Mandy’s new boss, bringing complications to her life. The series focuses on Sheldon’s older brother, Georgie, as he welcomed a child with his first wife, Mandy.