Kaley Cuoco
Pictured: Kaley Cuoco plays Penny on "The Big Bang Theory."Reuters

"The Big Bang Theory" actress Kaley Cuoco and her new boyfriend Karl Cook are reportedly living together.

It hasn't been too long since the duo started dating and according to Star Magazine, she seems to have learned nothing from her relationship with Ryan Sweeting. Cuoco and Sweeting got engaged after dating for three short months, and they were married three months later. "No one can believe it," an insider told Star, reported Celeb Dirty Laundry. "They've only been dating for a couple of months. Sure, Karl's a decent guy and nothing at all like Ryan, but this is crazy. Did she learn nothing?"

However, according to the Celeb Dirty Laundry report, this is a smart move, as Cuoco isn't rushing into marriage with Cook. She is taking her time to see how things work out with the professional equestrian, but marriage might be in the near future as Cuoco and Cook were earlier spotted flipping through bridal magazines. "They flipped through them all, cover to cover, and commented on which dresses looked the best," a Star Magazine source said, according to Celeb Dirty Laundry.

It hasn't been too long since Cuoco, who plays Penny on "The Big Bang Theory," called it quits with her husband Ryan Sweeting.  One of the reasons for their split, according to reports, was Sweeting's lack of steady income. "Kaley ended things with Ryan. It didn't come out of left field or a shock to anyone close to them ... it was a long time coming," a source told ET. "She realized she wants to be with a guy who has a job and is motivated. All of Ryan's friends knew it was going to end bad."

They were married for a total of 21 months. Before Sweeting, Cuoco secretly dated her "The Big Bang Theory" co-star Johnny Galecki for roughly two years until December 2009.

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