EXCLUSIVE: Kaley Cuoco Shares Playful PDA Pic With Mystery Man -- Meet Karl Cook

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Kaley Cuoco is getting affectionate with a new man in her life.

The 30-year-old Big Bang Theory star Instagrammed a picture of a handsome guy licking her on the forehead while she shot a gun over the weekend, leaving plenty of fans wondering who the lucky mystery fella is. ET can now confirm it's 25-year-old equestrian Karl Cook.

Cuoco did little to dissuade romance rumors, captioning the cute shot with a heart emoji.

WATCH: Kaley Cuoco's Redecorated Her Home With $3,450 Worth of Horse Wallpaper

Cuoco dating Cook would also make plenty of sense, given her outspoken love of horses. Cook -- who hails from Woodside, California, and is the son of billionaire businessman and co-founder of Intuit software, Scott Cook -- is quite the accomplished equestrian. Earlier this month, he took home the blue ribbon in the $25,000 SmartPak Grand Prix.

Cuoco recently Instagrammed a picture of the two smiling big after a win, congratulating Cook personally.

"Sooo how many wins does that make??? Amazing GP win @hitshorseshows #thermal, Mr. KC so proud of you! (And entire team !)," she wrote.

A source tells ET that Cook has always been very focused on horseback riding, and that while he can be "quiet" at first, he definitely has a "goofy" side once he opens up.

Meanwhile, Cuoco frequently shows off her own impressive riding skills with her fans. Last month, the Humane Society also gave Cuoco the title of 2015's Horsewoman of the Year.

Cuoco split from her ex, pro tennis player Ryan Sweeting, last September, after almost two years of marriage. Earlier this month, she told Cosmopolitan that she's not exactly ready to love again.

"[What happened] changes the way I look at marriage, and that makes me sad," Cuoco told the magazine. "It does not change the way that I look at love. I cannot wait to be in love again. I don't feel like I am ready yet...which is so different for me. I dive into everything."

However, last month she did share that she's in "a much better place" since the breakup.

"I already feel like 2016 is going to be a much better year than 2015," Cuoco told Ellen DeGeneres. "It's been rough, but things are going good. I'm much, much better now. I'm in a much better place than I was."

WATCH: EXCLUSIVE -- Why Kayley Cuoco Would Be Terrible at Planning 'Bachelor' Dates 

And she's certainly looking the best she's ever looked. ET caught up with Cuoco in February at the Big Bang Theory's celebration of its 200th episode, where she told us the secret to her flawless figure.

"Yoga is the secret," Kaley stressed. "Yoga is the reason that I have been [looking great]. It has done everything, mentally and physically. I love it."

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