CrissColfer is the pairing of Glee stars Darren Criss and Chris Colfer in a romantic or sexual way. The pairing is still fairly popular, despite Criss's claim to be heterosexual and also the many denials from Colfer that he is in no way in a romantic relationship with his co-star. The pairing is less popular than Klaine, but has gotten a bit more attention since the on-stage kiss at the final Glee Live show for season 2.
Person 1: Did you see the video of the live Klaine kiss at the Glee concert?
Person 2: Yeah! I even heard that it wasn't planned!
Person 1: Really? So Darren did it by choice? I guess CrissColfer is real then!