I think an idea after the The Jimmy Timmy Power Hour 3 and when The Jimmy Neutron Show ceased in 2006. Was that Cindy would be the only character from the Jimmy Neutron Series to come as a guest star on the Fairly Odd Parents Show for the last 11 years from 2006 to 2017. To get away from Jimmy Neutron, since she's clearly sick of him and his terrible inventions and their relationship hasn't really been working out. So if that would've happen. Timmy Turner would apologize for dumping her as he sees her, and realize he made bad choices. Timmy and Cindy would reunite again, then do magical adventures together. And eventually start dating again, so it would mean that Timmy and Cindy are met for each other. And on the Jimmy Timmy Power Hour 3, a better idea would be that Timmy would say remarks about Cindy, like your so gorgeous and smart besides Jimmy, when the characters were making a plan to stop the villain.