Kaley Cuoco and Karl Cook
Kaley Cuoco (L) and boyfriend Karl Cook attend the Longines Masters Gala, in Long Beach, California Getty

Kaley Cuoco has seldom shied away from flaunting her love for boyfriend Karl Cook, but her latest social media upload seems to be amping up the romance. Sending her three million plus followers into a frenzy, the Big Bang Theory star shared a cozy snap with her man, getting up, close and personal.

"All jokes aside, I am so proud of you and proud to be yours... @mrtankcook," the sitcom actress shared alongside the pic. In the heat-melting photo, the CBS actress flashes her brightest smile for the lenses while resting her arm on Mr Cook's shoulder, who on the other hand seals the deal with a kiss on her lip.

For the uninitiated, Cuoco's latest photo comes on the heels of the couple's hilarious Instagram banter, which included both of them posting awkward moments of each other's online.

"Sometimes you just have to look at yourself in the mirror and say, 'f it, I'm going to wear two left shoes.' Thankfully I could document this prestigious moment. I love you @normancook," Cook had shared alongside an oddly funny video of his girlfriend, initiating the whole social media war.

The Penny actress shot back with a number of snaps and posts capturing her animal-loving boyfriend in the most hilarious yet silly situation. One such moment included Cook wearing a hat and a purple boa and lip-syncing to Abba's Dancing Queen.

"Don't really think this video needs a description BUT @mrtankcook in Australia, singing Dancing Queen, wearing a boa, drinking bourbon from a water bottle," she captioned her post.

Thankfully for fans, Mr Cook soon clarified the sudden flurry of Instagram posts with another hilarious snap – this time showing his actress girlfriend holding a chicken in her arms. "@normancook and I are in a bit of a back and forth Instragram battle," he shared, "In that spirit here is a gem of the first time Kaley held a chicken. The sheer terror is palpable."

While fans don't seem to mind the hilarious Instagram posts, Cuoco might just have successfully put an end to the exchange with the adorable kiss.

"Best thing on the Internet today," shared one user, gushing about the sweet kiss photo, as another fuelled speculation, writing, "Looks like a proposal pic."

"You're kidding me...your name is Cuoco and his is Cook? You are meant to be," a fan rotting for the two wrote.

"Sweetest pic ever! Thanks for the laughs, enjoy the love," someone else commented, thanking Cuoco and Cook on behalf of their every amused Instagram follower.