By Jessica Wedemeyer
8:26am PDT, May 13, 2019
Kaley Cuoco actually secretly dated Johnny Galecki for two years early in their relationship as co-stars on "The Big Bang Theory." She's also dated actors Henry Cavill, Kevin Zegers, Paul Blackthorne, Al Santos and Thad Luckinbill and has reportedly romanced Ashley Tisdale's now-husband Christopher French, Evan and Jaron singer Jaron Lowenstein and Pepper frontman Bret Bollinger. The blonde beauty was also briefly engaged to addiction specialist Josh Resnik in 2011 and was married to tennis pro Ryan Sweeting from New Year's Eve 2013 to mid-2015. She began dating billionaire heir and equestrian Karl Cook (pictured) in early 2016. The couple tied the knot in June 2018.
RELATED: The cast of "The Big Bang Theory" then and now
Johnny Galecki stars as Leonard Hofstadter, who's married to Kaley Cuoco's Penny, on "The Big Bang Theory."
In addition to Kaley Cuoco, Johnny Galecki has been romantically linked to actresses Kelli Garner, Ari Graynor and Laura Harris. He also reportedly romanced florist Kelsey Harper and a blonde beauty by the name of Ariella Nicole. In 2018, the super-private star began dating Alaina Meyer, who's 22 years his junior, and in May 2019, the couple announced that they're expecting their first child together.
Jim Parsons stars as Sheldon Cooper, who married Mayim Bialik's Amy Farrah Fowler on Season 11 of "The Big Bang Theory."
Jim Parsons, who came out publicly in 2012, wed his longtime partner, graphic designer Todd Spiewak, in May 2017. The duo had been an item for around 15 years when they tied the knot.
Simon Helberg stars as Howard Wolowitz, who's married to and shares a baby with Melissa Rauch's Bernadette Rostenkowski, on "The Big Bang Theory."
Simon Helberg has been married to actress-producer Jocelyn Towne since 2007. They have two children: daughter Adeline, who was born in 2012, and son Wilder, who arrived in 2014.
Kunal Nayyar stars as Raj Koothrappali, the most romantically challenged member of the gang, on "The Big Bang Theory."
In 2011, Kunal Nayyar wed former Miss India Neha Kapur after a two-year courtship.
Mayim Bialik stars as Amy Farrah Fowler, who married Jim Parsons' Sheldon Cooper during Season 11 of "The Big Bang Theory."
In May 2013, Mayim Bialik finalized her divorce from Michael Stone (pictured together in 2004) after almost a decade of marriage. The duo have two sons, Miles and Frederick. In December 2018, she revealed that she'd broken up with her secret boyfriend of five years. "If ever there were a story that should have ended not like this, I feel this might be it. But he has his own will and much as I wish I could control his will, I cannot. And so here we are," she wrote in an essay on Grok Nation. "There is rarely good timing for a breakup. But most certainly, the worst time is now. In case he is reading this, I'm just meh with this timing. Because say what you will, the holidays are a time to not be recently broken up."
Melissa Rauch stars as Bernadette Rostenkowski, who's married to and shares a baby with Simon Helberg's Howard Wolowitz, on "The Big Bang Theory."
Melissa Rauch is married to writer-producer Winston Rauch, whom she met in college and reportedly wed in 2007. (He actually took her last name when they tied the knot!) The duo welcomed daughter Sadie in December 2017.
