Will there be more wedding bells for The Big Bang Theory's loveable geeks next season? Not likely.

In an exclusive chat at the Monte-Carlo Television Festival, showrunner Bill Prady tells us that Howard (Simon Helberg) and Bernadette's (Melissa Rauch) marriage will be an important part of season six, but hinted that Penny (Kaley Cuoco) and Leonard (Johnny Galecki) are far from taking the big step. So what can fans expect from CBS' gang of geeks next season? Find out...

"What we've always said about Penny and Leonard is they met each other at the wrong time in their lives," Prady tells us of the fan favorite couple. "They met each other at a time when Leonard is ready to settle down and Penny isn't yet and it will make things rocky for a while. And I think that until she grows up a little bit —and I don't mean emotionally, I mean chronologically—I think they have challenges." Whether Leonard will wait is anyone's guess, but we're rooting for them.

Meanwhile, status-quo-loving Sheldon (Jim Parsons) will continue to be pushed by Amy (Mayim Bialik), whose progress in inching her beau toward physical contact has surprised even the writers. "We writers find Sheldon and Amy's relationship as peculiar and unpredictable as the audience does and we always start from the point of view that Sheldon will permit no advancement whatsoever," Prady says. "We are always surprised when Amy is able to get him to move forward in the relationship."

How long will the increasingly frustrated Amy wait, and are there cats in Sheldon's future? Prady says we'll just have to wait and see!

So, aside from romance, what else can we expect to see in season six? Beverly (Christine Baranski), Leonard's steely, intellectual mother, and Mary (Laurie Metcalf), Sheldon's warm, lovable mother, will meet, and mother envy will ensue. And at some point Sheldon and Amy's mothers will meet—though we may not get to watch, but instead will hear about it from Sheldon and Amy.