Melissa Rauch and Simon Helberg Melissa Rauch and Simon Helberg

[SPOILER ALERT: The following story contains details about the Season 5 finale of The Big Bang Theory. Read at your own risk.]

They do! And he left!

On The Big Bang Theory season finale, Howard (Simon Helberg) solved his scheduling predicament by marrying Bernadette (Melissa Rauch) in a last-minute rooftop wedding officiated by their pals hours before blasting off into space for his NASA mission. His new bride and his friends then watched wistfully on TV as Howard, who had been expressing his reservations to fellow — and real-life — astronaut Mike Massimino, launched off into the beyond. His take-off words? A curdling scream.

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That won't be true for Penny and Leonard though, but Prady believes the two can recover from Leonard's awkward proposal if they can get on the same page about what they want.

"I think it's just a messy, rocky relationship," he says. "I think that there's any possibility that they could say this is crazy, let's just stop this. They could say let's push forward. They have very strong feelings for each other. Their issues have to do with what they currently want in their lives right now. I don't think Penny wants to be married. Leonard is five years older than her. If you've ever been in a relationship where the issue of whether or not you love each other isn't the question. It's what do you want your lives to be and what do you want to be doing with your life right now? I think that winds up being the downfall of a lot of relationships. You know, as an adult, love is not sufficient."

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Additional reporting by Natalie Abrams