Jim Parsons, Mayim Bialik
Jim Parsons and Mayim Bialik have become the best of friends on- and off-screen. Pictured: Parsons, Bialik at the Alzheimer's Association benefit in Beverly Hills, California on March 26, 2014. Reuters/Danny Moloshok

“Big Bang Theory” star Jim Parsons recently shared an adorable photo with his co-star, Mayim Bialik, on the set of the hit CBS sitcom.

On his Instagram account, the actor shared a selfie with his onscreen partner. In the snap, both of them have huge grins on their faces. Parsons captioned the photo by saying that Bialik was all smiles while listening to Melissa Rauch deliver her lines. Since the two have become very close on set, this was Bialik’s way of supporting her best friend.

“Big Bang Theory” Season 10 is expected to have a total of 24 episodes so the cast members are still filming their scenes. Last week, Parsons celebrated his birthday on set, and Kaley Cuoco posted a hilarious video to commemorate his special day. As of late, it is still unclear when filming will wrap up for the show. But “Big Bang Theory” has already been picked up for two more seasons.

Read: When will ‘Big Bang Theory’ Season 10 return to CBS?

According to Deadline, the show will also have a total of 24 episodes for both Seasons 11 and 12. Parsons, Cuoco, Johnny Galecki, Kunal Nayyar and Simon Helberg will all be returning after they signed their amended contracts. All of the five original cast members will be receiving $1 million per episode. However, Bialik and Rauch, who have yet to sign their new agreement, are only expected to receive $200,000 per episode.

In order to speed up the signing process, Parsons, Cuoco, Galecki, Nayyar and Helberg offered to give $50,000 each to Bialik and Rauch. If this will be approved by the network executives, the five original cast members will be receiving $900,000 per episode, while Bialik and Rauch will be receiving $500,000 per episode.

“Big Bang Theory” Season 10 airs Thursdays at 8 p.m. EST on CBS.