We haven’t seen Sebastian (Grant Gustin) on Glee since he took Kurt (Chris Colfer) and Blaine (Darren Criss) to gay bar Scandals a few weeks ago. But the pretty boy Warbler is back in Tuesday’s episode and he’s still hot for Blaine. Kurt, though, isn’t giving up without a fight. In this exclusive clip, the two dudes have a major smack talking session. One can only hope they settle this like men…and decide the winner in a dance-off. Watch below...