Jim Parsons as Sheldon Cooper in 'The Big Bang Theory'
Jim Parsons as Sheldon Cooper in 'The Big Bang Theory'Facebook/ The Big Bang Theory

The season 8 finale of CBS' "The Big Bang Theory" will see Amy and Sheldon (Mayim Bialik and Jim Parsons), and Penny and Leonard (Kaley Cuoco-Sweeting and Johnny Galecki) taking some life-changing decisions.

The finale titled "The Commitment Determination" will air on 7 May, and will see at least one couple calling it quits. And based on spoilers, that couple is going to be Amy and Sheldon.

The final episode of the season will see Sheldon pushing Leonard and Penny to pick a date for their wedding after Amy gives them grief about the slow pace of their own relationship. Amy and Sheldon will be celebrating the fifth anniversary of their first date, and she realises she is not happy that their relationship hasn't progressed much.

Talking about the finale and what's in store for Amy-Sheldon and Leonard-Penny, showrunner Steven Molaro told The Hollywood Reporter that both these couples will make huge changes in their lives.

"The finale episode is actually also the fifth anniversary of Sheldon and Amy's first date — or at least their meeting, which we call a date. It has been five years, and even though things have been progressing, for Amy, it's still, for her, not quite at the speed she'd like, so she really starts pushing back, and he's got relationships on his mind because of that."

"He wants to know why he's getting grief about moving slowly, where if Leonard and Penny are an example of a couple moving forward, they've been engaged for over a year and can't even pick a date. So he starts poking at that and making them ask themselves the same questions. Both of those couples — Sheldon and Amy and Leonard and Penny — make some huge, life-changing decisions," the showrunner said.

The finale will also see Howard and Bernadette getting used to life without Mrs Wolowitz, and Raj and Emily thinking about the future of their relationship.

"The Big Bang Theory" airs Thursdays on CBS.