Usually, ex lovers in Hollywood and even outside the showbiz life don't speak to each other after their break up. But that is not the case for Big Bang Theory stars Kaley Cuoco and Johnny Galecki, because they were recently seen looking sweet and playfully flirty.

On November 7, Galecki posted an Instagram photo of him and ex-girlfriend Cuoco, as he was snapped biting the back of her neck. He captioned it with, "Hilarious night out in the LA arts district w/ @normancook #BFFsbite." 

The two were hanging out together during the launch of the video game Fallout 4. But despite the recent public display of affection or what not, Cuoco still says that they are just friends. In fact, she posted a photo of her and Galecki last month with a caption that says, "So sorry to disappoint, but no secret flings going on here. Me and @sanctionedjohnnygalecki are just the best of buds - Leonard and Penny will just have to suffice!"

All these rumors of them getting back together has a lot to do with Cuoco's recent divorce from her ex-husband Ryan Sweeting back in September. Us Magazine wrote that she and Galecki had a dating history that went on from 2007 to 2009.

The Big Bang Theory actress continues to tell people that her relationship with Galecki is purely platonic although fans would really want for the two to get back together. It is also noteworthy to keep in mind that the actress is really busy working on her career aside from her TBBT taping on a weekly basis, she also just landed another gig in a film called Burning Bodhi. It is totally different from her character in TBBT and it ilooks like she is expanding her genre in the industry.