‘The Big Bang Theory’ season 10 star Kaley Cuoco shares adorable set photo with Johnny Galecki

"The Big Bang Theory" season 10 cast member Kaley Cuoco recently shared an adorable photo with his co-star Johnny Galecki via his Instagram account.

On Thursday, the co-stars were photographed walking outside of the Warner Bros. studio where they normally film their scenes as Penny and Leonard, respectively.

In the snap, Cuoco and Galecki could be seen wearing an all-black ensemble. It also cannot be denied that the co-stars are having so much fun in between takes. The former's arms were outstretched, while the latter looked at her intently.

Meanwhile, Cuoco and Galecki were in a relationship with each other a few years back. After Cuoco's split from her ex-husband Ryan Sweeting, she was once again linked to Galecki.

Both actors shared a photo via their respective Instagram accounts slamming the rumors that Galecki was the third party in Cuoco and Sweeting's marriage. It was later on confirmed that the couple split because of the latter's alcohol problem.

In other news, Penny and Leonard will face a huge step in their marriage in the hit CBS TV show. According to TV Line, the premiere episode for "The Big Bang Theory" season 10 will focus on the arrival of Penny's mom Susan and brother Randall.

"As everyone deals with an awkward 'morning after' Leonard's dad hooked up with Sheldon's mother, Penny's anxiety-ridden mother, drug dealing brother arrive for the wedding," the synopsis read.

"The Big Bang Theory" season 10 will premiere on CBS on Sept. 19 at 8 p.m. ET.

So sorry to disappoint , but no home wreckers or secret flings going on here. Me and @sanctionedjohnnygalecki are just the best of buds- Leonard and Penny will just have to suffice!!!