"They are totally hot for each other," a source told the magazine. Another source added that Cavill is "a massive Big Bang Theory fan" and "has always wanted to date her," while People reports that the couple started dating recently.
While the couple hasn't gone public with their romance, Cuoco tweeted support for her supposed beau on June 15. "Everyone go see 'man of steel'. It's fantastic in every way," she tweeted, along with a photo of her staring adoringly at a poster of Cavill.