Young Sheldon season 6, episode 19 may not have any significant development when it comes to Georgie and Mandy's relationship, but it secretly reveals why they will break up in The Big Bang Theory. The couple has gone through a lot in the short period of time that they know each other. Following a whirlwind affair, the arrival of their daughter, Baby Ceecee, and Georgie's unexpected marriage proposal, there is growing interest to know what's next for the pair. There isn't any big progress in their story in Young Sheldon season 6, episode 19, "A New Weather Girl and Stay-At-Home Coddler," but it subtly shows the conflict that will eventually end their relationship.
Unlike the rest of the Cooper family, there's barely anything known about Mandy, because she was never on The Big Bang Theory. In fact, she was never even referenced in the nerd-centric sitcom, despite Sheldon's penchant for sharing childhood anecdotes with the Pasadena gang. This allows Young Sheldon to craft her and Georgie's story with minimal narrative limits. Regardless of what happens next to the couple after Young Sheldon season 6, episode 19, their long-term future is already confirmed. Unfortunately, it isn't a good one.
In Young Sheldon's "A New Weather Girl and Stay-At-Home Coddler," Mandy prepares to apply to be Medford's local weather girl — her attempt in getting back into the workforce after giving birth to Baby Ceecee. Georgie, who is usually very understanding and supportive, is interestingly skeptical about the idea. Multiple times in the outing, he tries to dissuade her from pushing through with her plan. The conflict becomes so bad that Meemaw has to intervene for it to be resolved. In the end, Georgie gives up and supports Mandy's endeavor.
Despite the crisis being averted, this difference in perspective could very well be the reason why Mandy and Georgie don't work out in The Big Bang Theory. It's clear from Georgie's reasoning that he doesn't see the need for Mandy to actually work. He thinks that it is just about the money for her, but that isn't the case. She wants a career and something that she can truly say is hers. The Cooper son, on the other hand, subscribes to the traditional family dynamic, where the mother is a homemaker and the dad is the provider.
Unlike Mary and Missy, Georgie only appeared on The Big Bang Theory towards the end of its run. By then, he had successfully turned his talent in diagnosing tires into a Texas empire with Dr. Tire. While Young Sheldon has always made it clear that the eldest Cooper kid has entrepreneurial skills, the drive to earn a lot of money could be his attempt at making sure that Mandy doesn't need to work anymore. Growing up in a family that's always financially strained could have motivated this mindset. It isn't because he wants to control Mandy. Instead, it's because he doesn't fully understand her need to have her own career.
