Hollywood Divorces Explode: Kaley Cuoco & Ryan Sweeting

Kaley Cuoco has divorced troubled husband Ryan Sweeting following a disastrous 21-month marriage — and rekindled her romance with former flame Johnny Galecki!

Kaley, 29, leaned on “Big Bang Theory” co-star Johnny while her marriage crumbled over Ryan’s excessive drug use and criminal background.

As RadarOnline reported, the Bahamian tennis pro, 28, had been arrested more than once on charges including DUI and felony possession of a controlled substance with intent to sell or deliver.

Throughout her trying time with Ryan, Kaley “never stopped having feelings” for Johnny, an insider exclusively told The ENQUIRER.

Now, Kaley’s returned to the only man she totally trusts! While her reps denied the rumors of a romance, the insider said: “They spend long hours on set, five days a week. Her feelings for him just keep growing stronger!”

Kaley secretly dated Johnny, 40, for about two years before ending things in 2009. T

hey kept their romance on the down-low, and many pals were unaware they’d been together until Kaley announced their split!

Kaley had a series of flings, and then “dove headfirst into marriage with Ryan after only six months of dating!” said the source.

Now single again, Kaley, who’s worth a reported $45 million, is ready to mingle, and “begged Johnny to give her another chance.”