Cuoco and Cook have been heating up and sharing photos together since March. The 30-year-old actress split with husband Ryan Sweeting in September 2015 after nearly two years of marriage and finalized their divorce earlier this month.
"You know what, I'm not ashamed of anything that happened," Cuoco said on CBS This Morning last week. "I fall in love really hard. I go deep and that person is it for me. I love hard, and when it's over, it's over."
"Some people make mistakes, and I wouldn't call it a mistake -- it's just what happened in my life, and now I'm excited to see what the future holds," she added. "But it happened, and now I have to say I'm happier than I've ever been."