"Johnny's actually one of my best friends," the Big Bang Theory star said

By Michele Corriston
Updated September 28, 2015 10:40 AM
Credit: Getty(2)

Less than a week before announcing their divorce, Kaley Cuoco gushed about her estranged husband Ryan Sweeting and his relationship with her ex – and current costar – Johnny Galecki.

“We dated like five years ago, so I think everyone’s moved on,” Cuoco said on Watch What Happens Live on Sept. 20. “Johnny’s actually one of my best friends. It’s a situation that ended well, I understand sometimes it doesn’t.”

As for tennis player Sweeting?

“Ryan loves him, Johnny loves him. It’s been a long time, so it’s great,” she said. “I got lucky. It could have been horrible.”

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On Friday, Cuoco, 29, and Sweeting, 28, told PEOPLE exclusively that they have split after 21 months of marriage. Five nights earlier on The Big Bang Theory‘s season 9 premiere, Cuoco’s character Penny wed Galecki’s Leonard.

“The few times Kaley and Ryan were out together recently, the tension was noticeable,” a source told PEOPLE over the weekend. “You could tell the honeymoon phase had ended.”