Kaley Cuoco is engaged The Big Bang Theory star's

Kaley Cuoco is engaged! The Big Bang Theory star's boyfriend, professional equestrian Karl Cook, popped the question Thursday - Cuoco's 32nd birthday. Cook, 26, posted an Instagram video of an emotional Cuoco crying and laughing soon after the proposal. "Who knew my prior post was oracular. Well after nearly two years I finally got up the courage to ask her to marry me," he wrote. "This is the best night of my life and I think the video shows it is the best night for kaley as well.....if she said yes!!!!!"

This will be the second marriage for Cuoco. She announced her divorce from professional tennis player Ryan Sweeting in September 2015 after less than 2 years of marriage.