Leonard Hofstadter — Johnny Galecki
Co-stars Johnny Galecki and Kaley Cuoco, who met on the show, dated for two years until 2009, but didn’t go public about their relationship until it was over. They admitted that they had wonderful time together, but were too protective about this relationship to tell someone about it. The two actors insisted that they have remained friends since breaking up – a good thing, as they continue to work together and their characters are a couple. Galecki was actually sitting in the first row when Kaley tied the knot with Ryan Sweeting.