Kunal Nayyar, Johnny Galecki, Jim Parsons, Simon Helberg Photo

From: Photo Flash: THE BIG BANG THEORY's 'The Love Spell Potential,' Airing 5/9

On THE BIG BANG THEORY's upcoming episode, titled 'The Love Spell Potential,' when the girls' trip to Vegas falls through, the guys invite them to play Dungeons & Dragons, causing Sheldon and Amy's relationship to take an unexpected turn. Meanwhile, Koothrappali and Lucy Go On a very awkward date, on Thursday, May 9 (8:00 - 8:31 PM, ET/PT) on CBS.