Kaley Cuoco Shares Cuddly Photo with Karl Cook Love is in the air for Kaley Cuoco. The Big Bang Theory star is really happy ? and it?s all because of her new boyfriend, equestrian Karl Cook. ?That?s what happy looks like,? she captioned the shot alongside a heart emoji. It?s nice to see her smiling again. Happiness looks great on her, especially since Cuoco hasn?t had the greatest year in terms of love.