See Kaley Cuoco's Beautiful Engagement Ring "The Big Bang Theory" star Kaley Cuoco is engaged to her boyfriend of a few months, tennis player Ryan Sweeting - and she's got the bling to show it. On Wednesday, the actress, 27, flaunted her new diamond engagement ring on the L.A. set of her new movie, "The Wedding Ringer." The film, reportedly due out next year, also stars Josh Gad, Mimi Rogers and Kevin Hart. Kaley Cuoco Weighs in on Her Hit TV Show Though a rep for Cuoco confirmed the star's happy news, she and Sweeting, 26, have yet to speak out about their engagement. Still, on Wednesday, Cuoco, who was linked to Henry Cavill earlier this year, tweeted a cryptic message. "Flying high, I could literally touch the sky with you...." she wrote.