Sheldon (Jim Parsons) and Amy's (Mayim Bialik) breakup in the Season 9 premiere of CBS' "The Big Bang Theory" devastated fans. However, while the twist was a shock to most viewers, some important people have not even heard the terrible news. As Amy reveals in a sneak peek video for episode 3, "The Bachelor Party Corrosion," she is keeping the split a secret from her parents! 

In the teaser video, Amy pressures Penny (Kelly Cuoco) to tell her parents that she is now married! Despite some trepidations, Penny agrees to make a phone call, but the tables turn when Amy reveals that she has not even told her own parents about her breakup. Why is she waiting? Perhaps she is not quite ready to close the book on her and Sheldon's relationship. 

Watch the sneak peek video below:

Meanwhile, Leonard (Johnny Galecki) and Penny worked through the whole Mandy situation in episode 2, so now the newlywed couple can finally celebrate. For Howard (Simon Helberg) and Raj (Kunal Nayyar) that means kidnapping Leonard for an impromptu, overdue bachelor party. However, while Leonard will actually be game for the Mexico getaway, another sneak peek video for episode 3 reveals that Sheldon will take some convincing. After joking that Howard and Raj would be willing to tie up Leonard and blindfold him to get him in the car, it turns out that they will have to do just that to get Sheldon to come along. 

Watch the sneak peek video below:

Will Amy tell her parents about her breakup? Will Howard and Raj be able to get Sheldon to Mexico for the bachelor party? Fans will have to wait to find out. "The Big Bang Theory" airs Mondays at 8 p.m. EDT on CBS.